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Neat Stream

#27b5df
Notes

Neat Stream (#27B5DF) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (194°, 74%, 51%) 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
#27b5df
RGB
rgb(39, 181, 223)
HSL
hsl(194, 74%, 51%)
HWB
hwb(194 15% 13%)
OKLCH
oklch(72.0% 0.127 223.8)
P3
color(display-p3 0.3470 0.6996 0.8574)
HSV
hsv(194, 83%, 87%)
LAB
lab(68.61% -21.73 -31.28)
LCH
lch(68.61% 38.08 235.22)
CMYK
cmyk(83%, 19%, 0%, 13%)

Etymology

Neat
adjective

Old French net, clean / pure — sharing root with Latin nitidus. As a color modifier, neat implies a clear-and-orderly quality where the hue carries the well-arranged visual register without clutter or excess. Sits at the crisp-and-orderly end of the grid, parallel to trim and tidy in usage.

Stream
noun

A narrow flowing body of fresh water — smaller than a river, larger than a creek. The color refers to a clear stream over a gravel bed in temperate woodland: a soft, slightly green-shifted blue with the optical clarity of unsilted water. Cooler than aqua, lighter than tide, with the hydrological weight of a word that appears across nearly every English landscape vocabulary.

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.

#27b5df
Original
#9db1e1
Protanopia
#86a0df
Deuteranopia
#00c2c3
Tritanopia
#9a9a9a
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
2.40:1
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
8.76:1

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
##27B5DF
Display P3
Display P3
color(display-p3 0.3470 0.6996 0.8574)
P3 has subtle headroomOKLCH chroma 0.127

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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