#903A17
Closest named color: Rust Brown (#8B3103). oklch(46.1% 0.126 40.6), rgb(144, 58, 23).
Aa
White text reads best on this color (7.49:1).
About this color
#903A17 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 46%, its chroma 0.126 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.023 away. White text reads best on it, at 7.49:1.
| Hue family | Browns |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.126) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.80:1 |
| White text | 7.49:1 |
Values
| HEX | #903A17 |
| RGB | rgb(144, 58, 23) |
| HSL | hsl(17, 72%, 33%) |
| OKLCH | oklch(46.1% 0.126 40.6) |
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 #903A17 | 7.49:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #903A17 | 2.80:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #903A17 text on white | 7.49:1 | AAA | Lc 85.3 | Fine for body text |
| #903A17 text on black | 2.80:1 | Fails | Lc -16.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EED2C9
oklch(88.5% 0.034 38.6)
-
Step 300
300
#E4B4A3
oklch(80.9% 0.061 40.4)
-
Step 400
400
#D58C71
oklch(70.8% 0.098 41.1)
-
Step 500
500
#C86D4C
oklch(63.2% 0.125 40.4)
-
Step 600
600
#B3532E
oklch(55.6% 0.135 40.7)
-
Step 700
700 (this color)
#903A17
oklch(46.1% 0.126 40.6)
-
Step 800
800
#7D381D
oklch(42.8% 0.104 40.9)
-
Step 900
900
#65311D
oklch(37.8% 0.081 41.1)
-
Step 950
950
#3B1D12
oklch(27% 0.051 40.6)
#903A17 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) | #524912 | 0.123 |
| Deuteranopia (no green cones) | #675C14 | 0.112 |
| Tritanopia (no blue cones) | #9F2533 | 0.060 |
| Achromatopsia (no color) | #555555 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903A17
#903A17
oklch(46.1% 0.126 40.6)
- #006379
#006379
oklch(46.2% 0.084 220)
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 #903A17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.023
- Saddle Brown #8B4513 ΔE 0.027
- Brown Red #922B05 ΔE 0.027
- Red Brown #8B2E16 ΔE 0.028
- Russet #A13905 ΔE 0.034
- Brick #A03623 ΔE 0.035
- Burnt Red #9F2305 ΔE 0.042
- Burnt Umber #A0450E ΔE 0.044
Use #903A17 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.