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Workmanlike Pith Lagoon

#40b5ce
Notes

Workmanlike Pith Lagoon (#40B5CE) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (191°, 59%, 53%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#40b5ce
RGB
rgb(64, 181, 206)
HSL
hsl(191, 59%, 53%)
HWB
hwb(191 25% 19%)
OKLCH
oklch(71.8% 0.108 214.9)
P3
color(display-p3 0.3874 0.7003 0.7955)
HSV
hsv(191, 69%, 81%)
LAB
lab(68.45% -24.45 -22.15)
LCH
lch(68.45% 32.99 222.18)
CMYK
cmyk(69%, 12%, 0%, 19%)

Etymology

Workmanlike
adjective

Old English weorcmann, workman — adjectival suffix -like. As a color modifier, workmanlike implies a clear-and-skilled-and-honest quality where the hue carries the visual register of journeyman-craftsman careful-and-competent hand-built craft. Sits at the crisp-and-functional end of the grid, parallel to functional and practical in usage.

Pith
modifier

Old English piþa, pith / inner-stalk. As a color modifier, pith implies a soft-inner-stalk-or-core quality, the visual register of bamboo-and-elderberry-and-rattan-pith hand-cut-and-extracted soft-inner-stalk-or-core hand-cut-and-extracted-pith-and-core surfaces under hand-cut-and-extracted-pith-and-core workshop-light. Sits at the modifier-and-texture end of the grid, parallel to cane and bark in usage.

Lagoon
noun

A shallow body of saltwater partially or fully enclosed by a barrier — coral atoll lagoons in the Pacific, Venice's Laguna Veneta, the Florida Keys' backcountry. The color refers to the average reflectance of a calm tropical lagoon at midday: a saturated, slightly muted blue-green with the optical clarity of shallow water over white sand. Brighter than reef, cooler than aquamarine, with the postcard weight of a Pacific atoll seen from above.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#40b5ce
Original
#a3afcf
Protanopia
#8fa1ce
Deuteranopia
#00bebd
Tritanopia
#9e9e9e
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon White
2.41:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
8.72:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##40B5CE
Display P3
Display P3
color(display-p3 0.3874 0.7003 0.7955)
P3 has subtle headroomOKLCH chroma 0.108

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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