#90503D
Closest named color: Sienna (#A0522D). oklch(50.3% 0.091 37.3), rgb(144, 80, 61).
Aa
White text reads best on this color (6.17:1).
About this color
#90503D is a medium-dark, moderately saturated red. In OKLCH its lightness is 50%, its chroma 0.091 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.036 away. White text reads best on it, at 6.17:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #90503D |
| RGB | rgb(144, 80, 61) |
| HSL | hsl(14, 40%, 40%) |
| OKLCH | oklch(50.3% 0.091 37.3) |
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 #90503D | 6.17:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #90503D | 3.40:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #90503D text on white | 6.17:1 | AA | Lc 80.5 | Fine for body text |
| #90503D text on black | 3.40:1 | AA large text | Lc -21.3 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F2E7E4
oklch(93.6% 0.013 35.7)
-
Step 200
200
#E9D4CE
oklch(88.5% 0.025 36.5)
-
Step 300
300
#DBB7AD
oklch(80.8% 0.044 36)
-
Step 400
400
#C89281
oklch(70.8% 0.07 38.2)
-
Step 500
500
#B97662
oklch(63.2% 0.09 37.4)
-
Step 600
600
#A45D48
oklch(55.5% 0.099 37.3)
-
Step 700
700 (this color)
#90503D
oklch(50.3% 0.091 37.3)
-
Step 800
800
#723F30
oklch(42.7% 0.076 37.2)
-
Step 900
900
#5C362B
oklch(37.6% 0.058 36.9)
-
Step 950
950
#362019
oklch(27% 0.037 38.4)
#90503D 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) | #60593B | 0.088 |
| Deuteranopia (no green cones) | #70673C | 0.082 |
| Tritanopia (no blue cones) | #9D454B | 0.044 |
| Achromatopsia (no color) | #616161 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90503D
#90503D
oklch(50.3% 0.091 37.3)
- #007086
#007086
oklch(50.3% 0.09 217.7)
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 #90503D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.036
- Cocoa #875F42 ΔE 0.040
- Saddle Brown #8B4513 ΔE 0.045
- Warm Brown #964E02 ΔE 0.046
- Burnt Umber #A0450E ΔE 0.047
- Milk Chocolate #7F4E1E ΔE 0.050
- Sepia #985E2B ΔE 0.051
- Brick #A03623 ΔE 0.057
Use #90503D 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.