#B1731B
Closest named color: Caramel (#AF6F09). oklch(60.7% 0.123 69.4), rgb(177, 115, 27).
Aa
Black text reads best on this color (5.33:1).
About this color
#B1731B is a medium-dark, moderately saturated brown. In OKLCH its lightness is 61%, its chroma 0.123 and its hue 69°. Its hue sits on the warm side of the wheel. The nearest named color is Caramel (#AF6F09), ΔE 0.012 away. Black text reads best on it, at 5.33:1.
| Hue family | Browns |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.123) |
| Temperature | warm |
| Nearest name | Caramel (#AF6F09) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #B1731B |
| RGB | rgb(177, 115, 27) |
| HSL | hsl(35, 74%, 40%) |
| OKLCH | oklch(60.7% 0.123 69.4) |
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 #B1731B | 3.93:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #B1731B | 5.33:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #B1731B text on white | 3.93:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #B1731B text on black | 5.33:1 | AA | Lc -35.2 | 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
#F9F5F0
oklch(97.2% 0.008 73.7)
-
Step 100
100
#F2E8DE
oklch(93.6% 0.017 67.6)
-
Step 200
200
#E8D6C2
oklch(88.5% 0.033 70.3)
-
Step 300
300
#DBBA97
oklch(80.9% 0.06 68.5)
-
Step 400
400
#C8965C
oklch(70.8% 0.096 69.3)
-
Step 500
500 (this color)
#B1731B
oklch(60.7% 0.123 69.4)
-
Step 600
600
#A06400
oklch(55.6% 0.121 69.2)
-
Step 700
700
#875400
oklch(49.2% 0.107 69.6)
-
Step 800
800
#6F4400
oklch(42.7% 0.093 69.4)
-
Step 900
900
#5C3803
oklch(37.5% 0.08 69)
-
Step 950
950
#362106
oklch(26.9% 0.051 69.2)
#B1731B 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) | #887805 | 0.073 |
| Deuteranopia (no green cones) | #96861E | 0.064 |
| Tritanopia (no blue cones) | #C26463 | 0.098 |
| Achromatopsia (no color) | #808080 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1731B
#B1731B
oklch(60.7% 0.123 69.4)
- #4187C9
#4187C9
oklch(60.9% 0.123 249.4)
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 #B1731B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Caramel #AF6F09 ΔE 0.012
- Leather #AC7434 ΔE 0.018
- Golden Brown #B27A01 ΔE 0.022
- Brown Orange #B96902 ΔE 0.025
- Bronze #A87900 ΔE 0.026
- Tiger's Eye #BC6C25 ΔE 0.028
- Clay Brown #B2713D ΔE 0.029
- Mustard Brown #AC7E04 ΔE 0.033
Use #B1731B 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.