#571003
Closest named color: Mahogany (#4A0100). oklch(30.1% 0.105 33.2), rgb(87, 16, 3).
Aa
White text reads best on this color (14.18:1).
About this color
#571003 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.105 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.043 away. White text reads best on it, at 14.18:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.105) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.48:1 |
| White text | 14.18:1 |
Values
| HEX | #571003 |
| RGB | rgb(87, 16, 3) |
| HSL | hsl(9, 93%, 18%) |
| OKLCH | oklch(30.1% 0.105 33.2) |
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 #571003 | 14.18:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #571003 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #571003 text on white | 14.18:1 | AAA | Lc 99.9 | Preferred for body text |
| #571003 text on black | 1.48:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FFE3DC
oklch(93.7% 0.032 34.3)
-
Step 200
200
#FFCBBF
oklch(88.5% 0.062 33.2)
-
Step 300
300
#FFA693
oklch(80.9% 0.11 32.7)
-
Step 400
400
#FF6B4D
oklch(70.7% 0.187 33.2)
-
Step 500
500
#F63500
oklch(63.2% 0.232 33.2)
-
Step 600
600
#D02B00
oklch(55.7% 0.205 33.2)
-
Step 700
700
#B02300
oklch(49.2% 0.18 33.2)
-
Step 800
800
#911B00
oklch(42.6% 0.157 33.2)
-
Step 900
900
#7A1500
oklch(37.6% 0.138 33.2)
-
Step 950
950 (this color)
#571003
oklch(30.1% 0.105 33.2)
#571003 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) | #262101 | 0.112 |
| Deuteranopia (no green cones) | #383100 | 0.101 |
| Tritanopia (no blue cones) | #61000E | 0.031 |
| Achromatopsia (no color) | #2B2B2B | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #571003
#571003
oklch(30.1% 0.105 33.2)
- #00353E
#00353E
oklch(30.2% 0.053 212.8)
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 #571003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.043
- Claret #680018 ΔE 0.048
- Chocolate Brown #411900 ΔE 0.051
- Burgundy #610023 ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.053
- Deep Brown #410200 ΔE 0.064
- Blood #770001 ΔE 0.071
- Dark Maroon #3C0008 ΔE 0.080
Use #571003 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.