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Glowering Picotee

#0a3a9a
Notes

Glowering Picotee (#0A3A9A) is a deep azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (220°, 88%, 32%) places it in the highly saturated band at a dark 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
#0a3a9a
RGB
rgb(10, 58, 154)
HSL
hsl(220, 88%, 32%)
HWB
hwb(220 4% 40%)
OKLCH
oklch(38.8% 0.164 262.2)
P3
color(display-p3 0.0999 0.2238 0.5815)
HSV
hsv(220, 94%, 60%)
LAB
lab(27.91% 24.91 -56.18)
LCH
lch(27.91% 61.45 293.91)
CMYK
cmyk(94%, 62%, 0%, 40%)

Etymology

Glowering
adjective

Middle English gloweren, to stare angrily — present-participle of glower, sharing root with glower and gloom. As a color modifier, glowering implies a deep-and-warm-and-glowering-resentful quality, the dark warm-orange of furnace-mouth-and-Volcanic-vent embered glow. Sits at the deep-and-warm end of the grid, parallel to smouldered and hellish.

Picotee
noun

A botanical term for a flower with edges colored differently from the body — Picotee roses, Picotee sweet peas, Picotee dahlias all have a crisp white or contrasting band along the petal margin. The color Picotee blue refers to a saturated body-color blue used as the dominant petal field: a saturated, slightly violet-shifted deep blue with the matte finish of high-density flower petal. Cooler than royal, warmer than indigo.

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.

#0a3a9a
Original
#00489d
Protanopia
#003c98
Deuteranopia
#005364
Tritanopia
#373737
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).
AAAon White
10.07:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.08:1

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
##0A3A9A
Display P3
Display P3
color(display-p3 0.0999 0.2238 0.5815)
P3 has subtle headroomOKLCH chroma 0.164

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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