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Buzzed Amur

#638dfd
Notes

Buzzed Amur (#638DFD) is a true azure 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 (224°, 97%, 69%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#638dfd
RGB
rgb(99, 141, 253)
HSL
hsl(224, 97%, 69%)
HWB
hwb(224 39% 1%)
OKLCH
oklch(66.7% 0.172 266.4)
HSV
hsv(224, 61%, 99%)
LAB
lab(60.60% 19.10 -60.22)
LCH
lch(60.60% 63.17 287.60)
CMYK
cmyk(61%, 44%, 0%, 1%)

Etymology

Buzzed
adjective

Imitative-onomatopoeic origin — past-participle of buzz, evoking the sound of bee-hum. As a color modifier, buzzed implies a saturated-and-vibrating-and-active quality, the bright color of insect-pollinator and neon-lamp low-amplitude-buzz visual-vibration. Sits at the bright-and-active end of the grid, parallel to jazzed and wired in usage.

Amur
noun

The river forming the border between Russia and China — and the saturated deep blue of Amur River water at Khabarovsk and the surrounding Russian Far East taiga sky. Amur refers to mid-depth Amur River water at Khabarovsk: a saturated, slightly cool deep blue with the optical complexity of cold-temperate continental river.

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.

#638dfd
Original
#589aff
Protanopia
#408cfb
Deuteranopia
#00a6b9
Tritanopia
#8c8c8c
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
3.11:1
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
6.76:1

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