#570B03
Closest named color: Mahogany (#4A0100). oklch(29.6% 0.109 31.1), rgb(87, 11, 3).
Aa
White text reads best on this color (14.43:1).
About this color
#570B03 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.109 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.038 away. White text reads best on it, at 14.43:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.45:1 |
| White text | 14.43:1 |
Values
| HEX | #570B03 |
| RGB | rgb(87, 11, 3) |
| HSL | hsl(6, 93%, 18%) |
| OKLCH | oklch(29.6% 0.109 31.1) |
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 #570B03 | 14.43:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #570B03 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #570B03 text on white | 14.43:1 | AAA | Lc 100.1 | Preferred for body text |
| #570B03 text on black | 1.45:1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DD
oklch(93.5% 0.033 29.4)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA695
oklch(80.9% 0.109 31.4)
-
Step 400
400
#FF6A53
oklch(70.6% 0.186 31)
-
Step 500
500
#FB2400
oklch(63.1% 0.245 31.1)
-
Step 600
600
#D41D00
oklch(55.5% 0.216 31.1)
-
Step 700
700
#B41700
oklch(49.2% 0.191 31.1)
-
Step 800
800
#951100
oklch(42.8% 0.166 31.1)
-
Step 900
900
#7D0C00
oklch(37.6% 0.146 31)
-
Step 950
950 (this color)
#570B03
oklch(29.6% 0.109 31.1)
#570B03 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) | #241F01 | 0.118 |
| Deuteranopia (no green cones) | #372F00 | 0.104 |
| Tritanopia (no blue cones) | #61000A | 0.026 |
| Achromatopsia (no color) | #2A2A2A | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #570B03
#570B03
oklch(29.6% 0.109 31.1)
- #00333B
#00333B
oklch(29.5% 0.051 211.4)
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 #570B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.038
- Claret #680018 ΔE 0.047
- Burgundy #610023 ΔE 0.050
- Chocolate Brown #411900 ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.056
- Deep Brown #410200 ΔE 0.060
- Blood #770001 ΔE 0.072
- Dark Maroon #3C0008 ΔE 0.075
Use #570B03 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.