#903657
Closest named color: Dark Mauve (#874C62). oklch(46.9% 0.126 0.4), rgb(144, 54, 87).
Aa
White text reads best on this color (7.36:1).
About this color
#903657 is a medium-dark, moderately saturated red. In OKLCH its lightness is 47%, its chroma 0.126 and its hue 0°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mauve (#874C62), ΔE 0.049 away. White text reads best on it, at 7.36:1.
| Hue family | Reds |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.126) |
| Temperature | warm |
| Nearest name | Dark Mauve (#874C62) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #903657 |
| RGB | rgb(144, 54, 87) |
| HSL | hsl(338, 45%, 39%) |
| OKLCH | oklch(46.9% 0.126 0.4) |
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 #903657 | 7.36:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #903657 | 2.85:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #903657 text on white | 7.36:1 | AAA | Lc 84.9 | Fine for body text |
| #903657 text on black | 2.85:1 | Fails | Lc -17.1 | 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
#FBF3F5
oklch(97.1% 0.009 0.1)
-
Step 100
100
#F5E5E9
oklch(93.6% 0.018 0.4)
-
Step 200
200
#EDD0D8
oklch(88.4% 0.034 359.3)
-
Step 300
300
#E3B1BF
oklch(81% 0.061 360)
-
Step 400
400
#D3879E
oklch(70.8% 0.097 0.3)
-
Step 500
500
#C56786
oklch(63.1% 0.124 0.3)
-
Step 600
600
#B04C6F
oklch(55.5% 0.135 0.5)
-
Step 700
700 (this color)
#903657
oklch(46.9% 0.126 0.4)
-
Step 800
800
#7B334C
oklch(42.8% 0.104 0.7)
-
Step 900
900
#632D3F
oklch(37.6% 0.081 0.6)
-
Step 950
950
#3A1B25
oklch(26.9% 0.051 0.5)
#903657 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) | #464B58 | 0.140 |
| Deuteranopia (no green cones) | #5E5C55 | 0.127 |
| Tritanopia (no blue cones) | #9C2D43 | 0.037 |
| Achromatopsia (no color) | #565656 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #903657
#903657
oklch(46.9% 0.126 0.4)
- #006A5D
#006A5D
oklch(47% 0.085 180.5)
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 #903657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mauve #874C62 ΔE 0.049
- Berry #990F4B ΔE 0.051
- Mulberry #920A4E ΔE 0.057
- Light Burgundy #A8415B ΔE 0.057
- Brownish Purple #76424E ΔE 0.058
- Light Maroon #A24857 ΔE 0.059
- Dark Fuchsia #9D0759 ΔE 0.059
- Purple Red #990147 ΔE 0.059
Use #903657 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.