#B3630E
Closest named color: Umber (#B26400). oklch(58% 0.134 58.6), rgb(179, 99, 14).
Aa
Black text reads best on this color (4.70:1).
About this color
#B3630E is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.134 and its hue 59°. Its hue sits on the warm side of the wheel. The nearest named color is Umber (#B26400), ΔE 0.006 away. Black text reads best on it, at 4.70:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Umber (#B26400) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #B3630E |
| RGB | rgb(179, 99, 14) |
| HSL | hsl(31, 85%, 38%) |
| OKLCH | oklch(58% 0.134 58.6) |
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 #B3630E | 4.46:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #B3630E | 4.70:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #B3630E text on white | 4.46:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #B3630E text on black | 4.70:1 | AA | Lc -31.2 | 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 600.
-
Step 50
50
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F3E7DF
oklch(93.5% 0.017 56.2)
-
Step 200
200
#EBD4C4
oklch(88.5% 0.034 57.1)
-
Step 300
300
#DFB89B
oklch(81% 0.06 58.4)
-
Step 400
400
#CE9262
oklch(70.8% 0.097 59)
-
Step 500
500
#C07533
oklch(63.2% 0.123 58.7)
-
Step 600
600 (this color)
#B3630E
oklch(58% 0.134 58.6)
-
Step 700
700
#904D00
oklch(49.1% 0.117 58.7)
-
Step 800
800
#773E00
oklch(42.7% 0.102 58.2)
-
Step 900
900
#60350D
oklch(37.6% 0.08 58.4)
-
Step 950
950
#39200A
oklch(27.2% 0.051 59.2)
#B3630E 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) | #7B6C00 | 0.102 |
| Deuteranopia (no green cones) | #8E7E0E | 0.091 |
| Tritanopia (no blue cones) | #C55154 | 0.092 |
| Achromatopsia (no color) | #777777 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3630E
#B3630E
oklch(58% 0.134 58.6)
- #0083BE
#0083BE
oklch(58% 0.13 238.7)
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 #B3630E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Umber #B26400 ΔE 0.006
- Orangey Brown #B16002 ΔE 0.009
- Copper #B66325 ΔE 0.014
- Brown Orange #B96902 ΔE 0.020
- Orange Brown #BE6400 ΔE 0.021
- Raw Umber #A75E09 ΔE 0.027
- Tiger's Eye #BC6C25 ΔE 0.030
- Caramel #AF6F09 ΔE 0.030
Use #B3630E 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.