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Blazing Crystalline

#15e7fe
Notes

Blazing Crystalline (#15E7FE) is a true cyan 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 (186°, 99%, 54%) 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
#15e7fe
RGB
rgb(21, 231, 254)
HSL
hsl(186, 99%, 54%)
HWB
hwb(186 8% 0%)
OKLCH
oklch(84.9% 0.144 207.7)
P3
color(display-p3 0.4210 0.8926 0.9824)
HSV
hsv(186, 92%, 100%)
LAB
lab(84.21% -37.19 -24.02)
LCH
lch(84.21% 44.27 212.86)
CMYK
cmyk(92%, 9%, 0%, 0%)

Etymology

Blazing
adjective

Old English blǣse, flame — present-participle of blaze. As a color modifier, blazing implies a saturated-and-bright-flaming quality, the bright color of Yule-log and Bonfire-Night large-flame fire-emission. Sits at the bright-and-warm end of the grid, parallel to flaming and scorching in usage.

Crystalline
noun

Water of exceptional clarity — particularly the crystalline mountain springs of Alpine and Andean rivers. Crystalline color refers to a fresh-emerged spring water in a marble basin at Plitvice Lakes: a soft, slightly cool pale blue with the optical clarity of mineral-saturated 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

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.

#15e7fe
Original
#d1deff
Protanopia
#b5c9fe
Deuteranopia
#00f2ee
Tritanopia
#bcbcbc
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
1.51:1
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
13.89:1

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
##15E7FE
Display P3
Display P3
color(display-p3 0.4210 0.8926 0.9824)
P3 has subtle headroomOKLCH chroma 0.144

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.

Related Colors

Canvas