#903937
Closest named color: Brick (#A03623). oklch(46.4% 0.119 24.2), rgb(144, 57, 55).
Aa
White text reads best on this color (7.43:1).
About this color
#903937 is a medium-dark, moderately saturated red. In OKLCH its lightness is 46%, its chroma 0.119 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.037 away. White text reads best on it, at 7.43:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.119) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 2.82:1 |
| White text | 7.43:1 |
Values
| HEX | #903937 |
| RGB | rgb(144, 57, 55) |
| HSL | hsl(1, 45%, 39%) |
| OKLCH | oklch(46.4% 0.119 24.2) |
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 #903937 | 7.43:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #903937 | 2.82:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #903937 text on white | 7.43:1 | AAA | Lc 85.2 | Fine for body text |
| #903937 text on black | 2.82:1 | Fails | Lc -16.8 | 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
#FBF4F3
oklch(97.2% 0.008 27.2)
-
Step 100
100
#F5E6E4
oklch(93.6% 0.017 26.7)
-
Step 200
200
#EED2CF
oklch(88.6% 0.032 25.1)
-
Step 300
300
#E4B3AF
oklch(81% 0.058 23.8)
-
Step 400
400
#D48A84
oklch(70.7% 0.092 24.7)
-
Step 500
500
#C76B66
oklch(63.2% 0.118 24.2)
-
Step 600
600
#B2514D
oklch(55.7% 0.128 24.5)
-
Step 700
700 (this color)
#903937
oklch(46.4% 0.119 24.2)
-
Step 800
800
#7C3633
oklch(42.7% 0.098 24.6)
-
Step 900
900
#64302D
oklch(37.8% 0.076 24.7)
-
Step 950
950
#3B1C1B
oklch(27% 0.049 22.8)
#903937 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) | #4F4A36 | 0.126 |
| Deuteranopia (no green cones) | #655C35 | 0.116 |
| Tritanopia (no blue cones) | #9E2939 | 0.037 |
| Achromatopsia (no color) | #555555 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903937
#903937
oklch(46.4% 0.119 24.2)
- #00666E
#00666E
oklch(46.5% 0.079 204.2)
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 #903937, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.037
- Red Brown #8B2E16 ΔE 0.039
- Auburn #9B2226 ΔE 0.039
- Brown #A52A2A ΔE 0.044
- Brown Red #922B05 ΔE 0.044
- Rust Brown #8B3103 ΔE 0.047
- Burnt Red #9F2305 ΔE 0.051
- Russet #A13905 ΔE 0.053
Use #903937 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.