#90523A
Closest named color: Sienna (#A0522D). oklch(50.6% 0.091 41.6), rgb(144, 82, 58).
Aa
White text reads best on this color (6.08:1).
About this color
#90523A is a medium-dark, moderately saturated brown. In OKLCH its lightness is 51%, its chroma 0.091 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.032 away. White text reads best on it, at 6.08:1.
| Hue family | Browns |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.45:1 |
| White text | 6.08:1 |
Values
| HEX | #90523A |
| RGB | rgb(144, 82, 58) |
| HSL | hsl(17, 43%, 40%) |
| OKLCH | oklch(50.6% 0.091 41.6) |
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 #90523A | 6.08:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #90523A | 3.45:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #90523A text on white | 6.08:1 | AA | Lc 80.1 | Fine for body text |
| #90523A text on black | 3.45:1 | AA large text | Lc -21.7 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F2E7E3
oklch(93.6% 0.013 41.2)
-
Step 200
200
#E8D4CD
oklch(88.4% 0.024 40.3)
-
Step 300
300
#DAB8AB
oklch(80.9% 0.043 42)
-
Step 400
400
#C7927F
oklch(70.6% 0.07 40.6)
-
Step 500
500
#B8775E
oklch(63.2% 0.09 41.8)
-
Step 600
600
#A35F44
oklch(55.7% 0.097 42.1)
-
Step 700
700 (this color)
#90523A
oklch(50.6% 0.091 41.6)
-
Step 800
800
#71402D
oklch(42.6% 0.075 41.7)
-
Step 900
900
#5C3728
oklch(37.8% 0.059 42.7)
-
Step 950
950
#362018
oklch(27% 0.037 40.7)
#90523A 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) | #625A38 | 0.084 |
| Deuteranopia (no green cones) | #716739 | 0.077 |
| Tritanopia (no blue cones) | #9D474C | 0.048 |
| Achromatopsia (no color) | #626262 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90523A
#90523A
oklch(50.6% 0.091 41.6)
- #0A708A
#0A708A
oklch(50.6% 0.091 221.9)
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 #90523A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.032
- Cocoa #875F42 ΔE 0.034
- Warm Brown #964E02 ΔE 0.041
- Sepia #985E2B ΔE 0.044
- Saddle Brown #8B4513 ΔE 0.044
- Burnt Umber #A0450E ΔE 0.045
- Milk Chocolate #7F4E1E ΔE 0.047
- Medium Brown #7F5112 ΔE 0.053
Use #90523A 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.