#63270B
Closest named color: Chestnut (#742802). oklch(35.5% 0.095 42.5), rgb(99, 39, 11).
Aa
White text reads best on this color (11.50:1).
About this color
#63270B is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.095 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.037 away. White text reads best on it, at 11.50:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.095) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.82:1 |
| White text | 11.50:1 |
Values
| HEX | #63270B |
| RGB | rgb(99, 39, 11) |
| HSL | hsl(19, 80%, 22%) |
| OKLCH | oklch(35.5% 0.095 42.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #63270B | 11.50:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #63270B | 1.82:1 | Fails | Lc 8.0 | Not readable |
| #63270B text on white | 11.50:1 | AAA | Lc 95.9 | Preferred for body text |
| #63270B text on black | 1.82:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F1D1C5
oklch(88.4% 0.04 41.7)
-
Step 300
300
#E9B29D
oklch(80.9% 0.071 41.9)
-
Step 400
400
#DC8866
oklch(70.7% 0.114 42.6)
-
Step 500
500
#D0673A
oklch(63.1% 0.146 42.6)
-
Step 600
600
#BC4B11
oklch(55.6% 0.159 42.4)
-
Step 700
700
#A13B00
oklch(49% 0.147 42.3)
-
Step 800
800
#833208
oklch(42.7% 0.122 42.6)
-
Step 900
900 (this color)
#63270B
oklch(35.5% 0.095 42.5)
-
Step 950
950
#3E1B0C
oklch(27% 0.06 42.8)
#63270B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #383107 | 0.091 |
| Deuteranopia (no green cones) | #473E09 | 0.081 |
| Tritanopia (no blue cones) | #6E1922 | 0.048 |
| Achromatopsia (no color) | #393939 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63270B
#63270B
oklch(35.5% 0.095 42.5)
- #004355
#004355
oklch(35.5% 0.066 223)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #63270B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.037
- Reddy Brown #6E1005 ΔE 0.041
- Blood #770001 ΔE 0.059
- Claret #680018 ΔE 0.065
- Maroon #800000 ΔE 0.069
- Purple Brown #673A3F ΔE 0.071
- Wine Red #7B0323 ΔE 0.075
- Burgundy #610023 ΔE 0.080
Use #63270B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.