#903D55
Closest named color: Dark Mauve (#874C62). oklch(47.8% 0.115 4.3), rgb(144, 61, 85).
Aa
White text reads best on this color (7.03:1).
About this color
#903D55 is a medium-dark, moderately saturated red. In OKLCH its lightness is 48%, its chroma 0.115 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mauve (#874C62), ΔE 0.036 away. White text reads best on it, at 7.03:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.115) |
| Temperature | warm |
| Nearest name | Dark Mauve (#874C62) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #903D55 |
| RGB | rgb(144, 61, 85) |
| HSL | hsl(343, 40%, 40%) |
| OKLCH | oklch(47.8% 0.115 4.3) |
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 #903D55 | 7.03:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #903D55 | 2.98:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #903D55 text on white | 7.03:1 | AAA | Lc 83.9 | Fine for body text |
| #903D55 text on black | 2.98:1 | Fails | Lc -18.1 | 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
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E6E8
oklch(93.7% 0.015 7.5)
-
Step 200
200
#ECD1D6
oklch(88.4% 0.031 5.1)
-
Step 300
300
#E1B2BC
oklch(80.9% 0.056 4.2)
-
Step 400
400
#D0899A
oklch(70.7% 0.089 4)
-
Step 500
500
#C26A81
oklch(63.1% 0.114 4.2)
-
Step 600
600
#AD516A
oklch(55.6% 0.123 4.8)
-
Step 700
700 (this color)
#903D55
oklch(47.8% 0.115 4.3)
-
Step 800
800
#793649
oklch(42.8% 0.096 4.1)
-
Step 900
900
#622F3D
oklch(37.7% 0.075 3.9)
-
Step 950
950
#391C24
oklch(26.9% 0.047 3)
#903D55 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) | #4C4F56 | 0.127 |
| Deuteranopia (no green cones) | #625F53 | 0.117 |
| Tritanopia (no blue cones) | #9C3546 | 0.031 |
| Achromatopsia (no color) | #595959 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903D55
#903D55
oklch(47.8% 0.115 4.3)
- #006C63
#006C63
oklch(47.8% 0.084 184.9)
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 #903D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mauve #874C62 ΔE 0.036
- Light Maroon #A24857 ΔE 0.047
- Light Burgundy #A8415B ΔE 0.050
- Brownish Purple #76424E ΔE 0.053
- Berry #990F4B ΔE 0.065
- Brown #A52A2A ΔE 0.067
- Auburn #9B2226 ΔE 0.067
- Brick #A03623 ΔE 0.069
Use #903D55 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.