#903643
Closest named color: Auburn (#9B2226). oklch(46.3% 0.122 14.5), rgb(144, 54, 67).
Aa
White text reads best on this color (7.51:1).
About this color
#903643 is a medium-dark, moderately saturated red. In OKLCH its lightness is 46%, its chroma 0.122 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.043 away. White text reads best on it, at 7.51:1.
| Hue family | Reds |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #903643 |
| RGB | rgb(144, 54, 67) |
| HSL | hsl(351, 45%, 39%) |
| OKLCH | oklch(46.3% 0.122 14.5) |
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 #903643 | 7.51:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #903643 | 2.79:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #903643 text on white | 7.51:1 | AAA | Lc 85.4 | Fine for body text |
| #903643 text on black | 2.79:1 | Fails | Lc -16.6 | 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 700.
-
Step 50
50
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F5E5E6
oklch(93.5% 0.018 13.1)
-
Step 200
200
#EED1D2
oklch(88.5% 0.033 15.4)
-
Step 300
300
#E4B2B5
oklch(81% 0.058 14.4)
-
Step 400
400
#D5888E
oklch(70.8% 0.095 14.7)
-
Step 500
500
#C76872
oklch(63% 0.121 14.5)
-
Step 600
600
#B24E5B
oklch(55.5% 0.131 14.4)
-
Step 700
700 (this color)
#903643
oklch(46.3% 0.122 14.5)
-
Step 800
800
#7C343D
oklch(42.6% 0.1 14.7)
-
Step 900
900
#652E34
oklch(37.7% 0.079 14.9)
-
Step 950
950
#3B1B1F
oklch(26.9% 0.05 13.1)
#903643 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) | #4B4943 | 0.133 |
| Deuteranopia (no green cones) | #625B41 | 0.122 |
| Tritanopia (no blue cones) | #9D283B | 0.031 |
| Achromatopsia (no color) | #545454 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903643
#903643
oklch(46.3% 0.122 14.5)
- #006666
#006666
oklch(46.2% 0.079 194.8)
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 #903643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.043
- Brown #A52A2A ΔE 0.050
- Brick #A03623 ΔE 0.051
- Red Brown #8B2E16 ΔE 0.054
- Brownish Purple #76424E ΔE 0.054
- Dark Mauve #874C62 ΔE 0.057
- Light Maroon #A24857 ΔE 0.059
- Cranberry #9E003A ΔE 0.059
Use #903643 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.