#903307
Closest named color: Rust Brown (#8B3103). oklch(45.1% 0.135 40.6), rgb(144, 51, 7).
Aa
White text reads best on this color (7.88:1).
About this color
#903307 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.135 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Brown (#8B3103), ΔE 0.012 away. White text reads best on it, at 7.88:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Rust Brown (#8B3103) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #903307 |
| RGB | rgb(144, 51, 7) |
| HSL | hsl(19, 91%, 30%) |
| OKLCH | oklch(45.1% 0.135 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 #903307 | 7.88:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #903307 | 2.66:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #903307 text on white | 7.88:1 | AAA | Lc 86.5 | Fine for body text |
| #903307 text on black | 2.66:1 | Fails | Lc -15.6 | 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 800.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E5DE
oklch(93.5% 0.023 41.4)
-
Step 200
200
#F4D0C4
oklch(88.5% 0.044 39.3)
-
Step 300
300
#EEB09A
oklch(80.9% 0.079 40.4)
-
Step 400
400
#E28461
oklch(70.7% 0.126 41)
-
Step 500
500
#D76132
oklch(63.1% 0.161 40.9)
-
Step 600
600
#C24400
oklch(55.7% 0.173 40.6)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800 (this color)
#903307
oklch(45.1% 0.135 40.6)
-
Step 900
900
#6E290C
oklch(37.8% 0.106 40.6)
-
Step 950
950
#41190A
oklch(27.1% 0.067 40.2)
#903307 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) | #4E4400 | 0.134 |
| Deuteranopia (no green cones) | #655901 | 0.120 |
| Tritanopia (no blue cones) | #9F182C | 0.062 |
| Achromatopsia (no color) | #515151 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903307
#903307
oklch(45.1% 0.135 40.6)
- #005F75
#005F75
oklch(44.9% 0.082 220.8)
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 #903307, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Brown #8B3103 ΔE 0.012
- Brown Red #922B05 ΔE 0.014
- Red Brown #8B2E16 ΔE 0.019
- Burnt Red #9F2305 ΔE 0.036
- Saddle Brown #8B4513 ΔE 0.038
- Russet #A13905 ΔE 0.039
- Brick #A03623 ΔE 0.040
- Auburn #9B2226 ΔE 0.046
Use #903307 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.