#91503B
Closest named color: Sienna (#A0522D). oklch(50.4% 0.093 38.6), rgb(145, 80, 59).
Aa
White text reads best on this color (6.15:1).
About this color
#91503B is a medium-dark, moderately saturated red. In OKLCH its lightness is 50%, its chroma 0.093 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.033 away. White text reads best on it, at 6.15:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.093) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #91503B |
| RGB | rgb(145, 80, 59) |
| HSL | hsl(15, 42%, 40%) |
| OKLCH | oklch(50.4% 0.093 38.6) |
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 #91503B | 6.15:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #91503B | 3.41:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #91503B text on white | 6.15:1 | AA | Lc 80.4 | Fine for body text |
| #91503B text on black | 3.41:1 | AA large text | Lc -21.4 | 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
#F2E7E4
oklch(93.6% 0.013 35.7)
-
Step 200
200
#E9D4CD
oklch(88.5% 0.025 39.4)
-
Step 300
300
#DCB7AC
oklch(80.9% 0.046 37.2)
-
Step 400
400
#C99180
oklch(70.7% 0.073 37.6)
-
Step 500
500
#BA7560
oklch(63.1% 0.093 37.7)
-
Step 600
600
#A55D46
oklch(55.6% 0.101 38.5)
-
Step 700
700 (this color)
#91503B
oklch(50.4% 0.093 38.6)
-
Step 800
800
#733F2E
oklch(42.8% 0.078 38.8)
-
Step 900
900
#5D3629
oklch(37.7% 0.06 39.2)
-
Step 950
950
#372018
oklch(27.1% 0.039 39.9)
#91503B 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) | #615939 | 0.088 |
| Deuteranopia (no green cones) | #70673A | 0.083 |
| Tritanopia (no blue cones) | #9E454B | 0.045 |
| Achromatopsia (no color) | #616161 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91503B
#91503B
oklch(50.4% 0.093 38.6)
- #007087
#007087
oklch(50.4% 0.091 218.6)
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 #91503B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.033
- Cocoa #875F42 ΔE 0.040
- Warm Brown #964E02 ΔE 0.043
- Saddle Brown #8B4513 ΔE 0.044
- Burnt Umber #A0450E ΔE 0.044
- Sepia #985E2B ΔE 0.048
- Milk Chocolate #7F4E1E ΔE 0.049
- Brick #A03623 ΔE 0.056
Use #91503B 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.