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Scorching Cosmos

#4f99e1
Notes

Scorching Cosmos (#4F99E1) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (210°, 71%, 60%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#4f99e1
RGB
rgb(79, 153, 225)
HSL
hsl(210, 71%, 60%)
HWB
hwb(210 31% 12%)
OKLCH
oklch(66.7% 0.131 249.8)
P3
color(display-p3 0.3824 0.5931 0.8597)
HSV
hsv(210, 65%, 88%)
LAB
lab(61.55% -0.77 -43.32)
LCH
lch(61.55% 43.32 268.98)
CMYK
cmyk(65%, 32%, 0%, 12%)

Etymology

Scorching
adjective

Old English scorcnian, to dry up — present-participle of scorch. As a color modifier, scorching implies a saturated-and-burning-hot quality, the bright color of Mojave-Desert-and-Death-Valley mid-afternoon high-temperature surface-emission. Sits at the bright-and-warm end of the grid, parallel to searing and sizzling in usage.

Cosmos
noun

The Greek word for order — used in classical philosophy for the ordered universe and in modern English for the deep-space sky beyond Earth's atmosphere. Cosmos color refers to a long-exposure deep-space photograph: a saturated, slightly cool very deep blue with the optical depth of unfiltered upper-atmospheric scattering.

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.

#4f99e1
Original
#7a9ce4
Protanopia
#658ee0
Deuteranopia
#00aab3
Tritanopia
#8e8e8e
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).
AA Largeon White
3.01:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.98:1

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
##4F99E1
Display P3
Display P3
color(display-p3 0.3824 0.5931 0.8597)
P3 has subtle headroomOKLCH chroma 0.131

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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