#B37F07
Closest named color: Mustard Brown (#AC7E04). oklch(63.2% 0.13 79.4), rgb(179, 127, 7).
Aa
Black text reads best on this color (5.95:1).
About this color
#B37F07 is a medium-light, moderately saturated orange. In OKLCH its lightness is 63%, its chroma 0.130 and its hue 79°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Brown (#AC7E04), ΔE 0.013 away. Black text reads best on it, at 5.95:1.
| Hue family | Oranges |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.130) |
| Temperature | warm |
| Nearest name | Mustard Brown (#AC7E04) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #B37F07 |
| RGB | rgb(179, 127, 7) |
| HSL | hsl(42, 92%, 36%) |
| OKLCH | oklch(63.2% 0.13 79.4) |
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 #B37F07 | 3.52:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #B37F07 | 5.95:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #B37F07 text on white | 3.52:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #B37F07 text on black | 5.95:1 | AA | Lc -39.1 | 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
#F8F5EF
oklch(97.1% 0.009 84.6)
-
Step 100
100
#F0E9DD
oklch(93.6% 0.018 81.3)
-
Step 200
200
#E6D7C0
oklch(88.5% 0.035 78.7)
-
Step 300
300
#D7BD93
oklch(81% 0.063 79.5)
-
Step 400
400
#C29953
oklch(70.7% 0.101 79.3)
-
Step 500
500 (this color)
#B37F07
oklch(63.2% 0.13 79.4)
-
Step 600
600
#976A00
oklch(55.7% 0.116 79.3)
-
Step 700
700
#7F5900
oklch(49.2% 0.102 79.8)
-
Step 800
800
#684800
oklch(42.6% 0.088 79.5)
-
Step 900
900
#573C00
oklch(37.7% 0.078 80.1)
-
Step 950
950
#342302
oklch(27% 0.054 80)
#B37F07 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) | #938100 | 0.054 |
| Deuteranopia (no green cones) | #9F8E12 | 0.049 |
| Tritanopia (no blue cones) | #C4706C | 0.113 |
| Achromatopsia (no color) | #888888 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B37F07
#B37F07
oklch(63.2% 0.13 79.4)
- #5989D8
#5989D8
oklch(63.2% 0.131 259.9)
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 #B37F07, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Brown #AC7E04 ΔE 0.013
- Golden Brown #B27A01 ΔE 0.013
- Dark Goldenrod #B8860B ΔE 0.021
- Bronze #A87900 ΔE 0.026
- Dark Mustard #A88905 ΔE 0.031
- Yellowy Brown #AE8B0C ΔE 0.031
- Dark Tan #AF884A ΔE 0.041
- Caramel #AF6F09 ΔE 0.042
Use #B37F07 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.