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Spangled Brook

#12eed9
Notes

Spangled Brook (#12EED9) is a true teal with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (174°, 87%, 50%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#12eed9
RGB
rgb(18, 238, 217)
HSL
hsl(174, 87%, 50%)
HWB
hwb(174 7% 7%)
OKLCH
oklch(85.3% 0.150 183.6)
HSV
hsv(174, 92%, 93%)
LAB
lab(85.14% -51.10 -3.14)
LCH
lch(85.14% 51.19 183.52)
CMYK
cmyk(92%, 0%, 9%, 7%)

Etymology

Spangled
adjective

Middle Dutch spange, clasp / metal-disc — past-participle of spangle. As a color modifier, spangled implies a saturated-and-multi-point-reflective quality, the bright color of American-flag-stars and sequined-fabric metallic-disc-and-jewel-decoration. Sits at the bright-and-reflective end of the grid, parallel to glittering and sequined in usage.

Brook
noun

A small natural stream — smaller than a creek, particularly the spring-fed brooks of New England and northern Britain. Brook color refers to a clear-bottomed mountain brook seen against pebble bed: a soft, slightly cool pale blue-green with the optical clarity of cold spring-fed water.

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

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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.

#12eed9
Original
#e2e0d8
Protanopia
#c8cddb
Deuteranopia
#00f3e7
Tritanopia
#bebebe
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
1.47:1
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
14.26:1

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