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Bucolic Cloister

#1f052f
Notes

Bucolic Cloister (#1F052F) is a deep indigo 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 (277°, 81%, 10%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1f052f
RGB
rgb(31, 5, 47)
HSL
hsl(277, 81%, 10%)
HWB
hwb(277 2% 82%)
OKLCH
oklch(19.3% 0.081 309.2)
P3
color(display-p3 0.1094 0.0248 0.1764)
HSV
hsv(277, 89%, 18%)
LAB
lab(5.47% 21.67 -21.64)
LCH
lch(5.47% 30.63 315.04)
CMYK
cmyk(34%, 89%, 0%, 82%)

Etymology

Bucolic
adjective

Greek boukolikós, of-cattle-herding — adjectival suffix -ic. As a color modifier, bucolic implies a neutral-and-rural-and-pastoral quality, the neutral color of Constable-Stour-Valley-painting and Beethoven-Pastoral idyllic-rural-pastoral mood-evoking color treatment. Sits at the neutral-and-traditional end of the grid, parallel to pastoral and idyllic in usage.

Cloister
noun

Latin claustrum, enclosed-space — the deep-cool-gray monastic-courtyard arcade of medieval European Cistercian and Benedictine monastic architecture, where the brothers-and-sisters processed in silent prayer between the opus Dei (work of God) hours. Cloister color refers to a Le-Thoronet-Abbey 12th-century cloister-arcade face in November-overcast light: a dark cool-gray with the matte finish of Provençal-Triassic-limestone hand-quarried-and-hand-cut Cistercian-monastic-architecture.

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.

#1f052f
Original
#001130
Protanopia
#00122e
Deuteranopia
#1d0e19
Tritanopia
#0e0e0e
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
18.73:1
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
1.12:1

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
##1F052F
Display P3
Display P3
color(display-p3 0.1094 0.0248 0.1764)
P3 has subtle headroomOKLCH chroma 0.081

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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