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Pitchy Atacama

#15315c
Notes

Pitchy Atacama (#15315C) 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 (216°, 63%, 22%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#15315c
RGB
rgb(21, 49, 92)
HSL
hsl(216, 63%, 22%)
HWB
hwb(216 8% 64%)
OKLCH
oklch(31.7% 0.084 258.8)
P3
color(display-p3 0.1099 0.1896 0.3489)
HSV
hsv(216, 77%, 36%)
LAB
lab(20.55% 6.20 -28.84)
LCH
lch(20.55% 29.50 282.14)
CMYK
cmyk(77%, 47%, 0%, 64%)

Etymology

Pitchy
adjective

Old English pic, pitch — adjectival suffix -y. As a color modifier, pitchy implies the deep-glossy-black quality of bitumen-and-pine-pitch viscous-residue surfaces, particularly the Norse-and-Viking longship-pine-tar caulking. Sits at the deepest-warm end of the grid, parallel to tarry and warmer than Stygian.

Atacama
noun

The Chilean Atacama Desert — and the saturated deep blue of Atacaman lakes (Laguna Verde, Laguna Miscanti) at high altitude in the Andean Altiplano. Atacama refers to Laguna Miscanti at midday: a saturated, slightly cool deep blue with the optical depth of high-altitude desert lake 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.

#15315c
Original
#1c355e
Protanopia
#0f2e5b
Deuteranopia
#003b42
Tritanopia
#2e2e2e
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
12.92:1
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
1.63:1

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
##15315C
Display P3
Display P3
color(display-p3 0.1099 0.1896 0.3489)
P3 has subtle headroomOKLCH chroma 0.084

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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