#91631B
Closest named color: Raw Sienna (#9A6200). oklch(53.6% 0.103 73.4), rgb(145, 99, 27).
Aa
White text reads best on this color (5.24:1).
About this color
#91631B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 54%, its chroma 0.103 and its hue 73°. Its hue sits on the warm side of the wheel. The nearest named color is Raw Sienna (#9A6200), ΔE 0.017 away. White text reads best on it, at 5.24:1.
| Hue family | Browns |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.103) |
| Temperature | warm |
| Nearest name | Raw Sienna (#9A6200) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #91631B |
| RGB | rgb(145, 99, 27) |
| HSL | hsl(37, 69%, 34%) |
| OKLCH | oklch(53.6% 0.103 73.4) |
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 #91631B | 5.24:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #91631B | 4.00:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #91631B text on white | 5.24:1 | AA | Lc 75.8 | Fine for body text |
| #91631B text on black | 4.00:1 | AA large text | Lc -25.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#EFE9E0
oklch(93.6% 0.014 78.3)
-
Step 200
200
#E4D7C7
oklch(88.5% 0.026 73.2)
-
Step 300
300
#D3BDA0
oklch(80.9% 0.047 74.7)
-
Step 400
400
#BD9A6C
oklch(70.7% 0.075 73.7)
-
Step 500
500
#AC8044
oklch(63.1% 0.095 73.1)
-
Step 600
600 (this color)
#91631B
oklch(53.6% 0.103 73.4)
-
Step 700
700
#815714
oklch(49.1% 0.096 73.4)
-
Step 800
800
#694715
oklch(42.6% 0.079 72.6)
-
Step 900
900
#553C18
oklch(37.6% 0.062 73.8)
-
Step 950
950
#32230F
oklch(26.9% 0.039 72.7)
#91631B 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) | #73660E | 0.055 |
| Deuteranopia (no green cones) | #7E711D | 0.048 |
| Tritanopia (no blue cones) | #9E5755 | 0.085 |
| Achromatopsia (no color) | #6C6C6C | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91631B
#91631B
oklch(53.6% 0.103 73.4)
- #4070A8
#4070A8
oklch(53.7% 0.103 253.5)
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 #91631B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raw Sienna #9A6200 ΔE 0.017
- Sepia #985E2B ΔE 0.025
- Muddy Brown #886806 ΔE 0.025
- Dirt Brown #836539 ΔE 0.032
- Raw Umber #A75E09 ΔE 0.040
- Dirt #8A6E45 ΔE 0.041
- Cocoa #875F42 ΔE 0.046
- Earth #A2653E ΔE 0.047
Use #91631B 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.