#B66103
Closest named color: Umber (#B26400). oklch(58.1% 0.139 57.2), rgb(182, 97, 3).
Aa
Black text reads best on this color (4.70:1).
About this color
#B66103 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 58%, its chroma 0.139 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Umber (#B26400), ΔE 0.010 away. Black text reads best on it, at 4.70:1.
| Hue family | Browns |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.139) |
| Temperature | warm |
| Nearest name | Umber (#B26400) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #B66103 |
| RGB | rgb(182, 97, 3) |
| HSL | hsl(32, 97%, 36%) |
| OKLCH | oklch(58.1% 0.139 57.2) |
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 #B66103 | 4.46:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #B66103 | 4.70:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #B66103 text on white | 4.46:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #B66103 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
#F4E7DE
oklch(93.6% 0.019 57.2)
-
Step 200
200
#ECD4C3
oklch(88.5% 0.035 57.6)
-
Step 300
300
#E1B799
oklch(80.9% 0.063 57.2)
-
Step 400
400
#D09060
oklch(70.6% 0.101 57.1)
-
Step 500
500
#C27330
oklch(63.1% 0.128 57.3)
-
Step 600
600 (this color)
#B66103
oklch(58.1% 0.139 57.2)
-
Step 700
700
#914C00
oklch(49.1% 0.118 57.5)
-
Step 800
800
#783D00
oklch(42.7% 0.104 56.7)
-
Step 900
900
#62340A
oklch(37.7% 0.084 57)
-
Step 950
950
#391F09
oklch(26.9% 0.052 57.8)
#B66103 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) | #7B6B00 | 0.107 |
| Deuteranopia (no green cones) | #8F7F02 | 0.098 |
| Tritanopia (no blue cones) | #C84D52 | 0.094 |
| Achromatopsia (no color) | #777777 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B66103
#B66103
oklch(58.1% 0.139 57.2)
- #0084BC
#0084BC
oklch(58.1% 0.127 237.1)
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 #B66103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Umber #B26400 ΔE 0.010
- Orangey Brown #B16002 ΔE 0.010
- Copper #B66325 ΔE 0.015
- Orange Brown #BE6400 ΔE 0.017
- Brown Orange #B96902 ΔE 0.021
- Raw Umber #A75E09 ΔE 0.030
- Tiger's Eye #BC6C25 ΔE 0.030
- Burnt Siena #B75203 ΔE 0.034
Use #B66103 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.