#B1813F
Closest named color: Dark Tan (#AF884A). oklch(63.8% 0.102 72.8), rgb(177, 129, 63).
Aa
Black text reads best on this color (6.08:1).
About this color
#B1813F is a medium-light, moderately saturated orange. In OKLCH its lightness is 64%, its chroma 0.102 and its hue 73°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Tan (#AF884A), ΔE 0.018 away. Black text reads best on it, at 6.08:1.
| Hue family | Oranges |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.102) |
| Temperature | warm |
| Nearest name | Dark Tan (#AF884A) |
| Black text | 6.08:1 |
| White text | 3.45:1 |
Values
| HEX | #B1813F |
| RGB | rgb(177, 129, 63) |
| HSL | hsl(35, 48%, 47%) |
| OKLCH | oklch(63.8% 0.102 72.8) |
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 #B1813F | 3.45:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #B1813F | 6.08:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #B1813F text on white | 3.45:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #B1813F text on black | 6.08:1 | AA | Lc -39.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F8F5F1
oklch(97.1% 0.006 75.4)
-
Step 100
100
#F0E9E0
oklch(93.7% 0.014 74.4)
-
Step 200
200
#E5D7C6
oklch(88.6% 0.028 72.8)
-
Step 300
300
#D5BC9E
oklch(80.9% 0.05 72.1)
-
Step 400
400
#BF9968
oklch(70.7% 0.08 73)
-
Step 500
500 (this color)
#B1813F
oklch(63.8% 0.102 72.8)
-
Step 600
600
#9A6716
oklch(55.5% 0.111 72.6)
-
Step 700
700
#845604
oklch(49.2% 0.103 72.9)
-
Step 800
800
#6B460B
oklch(42.6% 0.086 72.4)
-
Step 900
900
#573B14
oklch(37.6% 0.066 72)
-
Step 950
950
#33230D
oklch(27% 0.042 73)
#B1813F 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) | #928338 | 0.053 |
| Deuteranopia (no green cones) | #9D8F41 | 0.047 |
| Tritanopia (no blue cones) | #C07572 | 0.084 |
| Achromatopsia (no color) | #8A8A8A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1813F
#B1813F
oklch(63.8% 0.102 72.8)
- #5D8FC8
#5D8FC8
oklch(63.9% 0.102 252.6)
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 #B1813F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Tan #AF884A ΔE 0.018
- Light Brown #AD8150 ΔE 0.018
- Tan Brown #AB7E4C ΔE 0.020
- Coffee #A6814C ΔE 0.021
- Puce #A57E52 ΔE 0.031
- Golden Brown #B27A01 ΔE 0.033
- Leather #AC7434 ΔE 0.035
- Mustard Brown #AC7E04 ΔE 0.035
Use #B1813F 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.