#510104
Closest named color: Mahogany (#4A0100). oklch(27.5% 0.111 27), rgb(81, 1, 4).
Aa
White text reads best on this color (15.48:1).
About this color
#510104 is a dark, moderately saturated red. In OKLCH its lightness is 27%, its chroma 0.111 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.018 away. White text reads best on it, at 15.48:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.111) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.35:1 |
| White text | 15.48:1 |
Values
| HEX | #510104 |
| RGB | rgb(81, 1, 4) |
| HSL | hsl(358, 98%, 16%) |
| OKLCH | oklch(27.5% 0.111 27) |
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 #510104 | 15.48:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #510104 | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #510104 text on white | 15.48:1 | AAA | Lc 101.0 | Preferred for body text |
| #510104 text on black | 1.35:1 | 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
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC4
oklch(88.6% 0.06 27.2)
-
Step 300
300
#FFA59B
oklch(80.9% 0.108 26.6)
-
Step 400
400
#FF695E
oklch(70.7% 0.185 27)
-
Step 500
500
#FF0B20
oklch(63.1% 0.254 27)
-
Step 600
600
#D90017
oklch(55.7% 0.227 27)
-
Step 700
700
#B70012
oklch(49% 0.2 27)
-
Step 800
800
#98000D
oklch(42.8% 0.174 27)
-
Step 900
900
#800009
oklch(37.7% 0.154 27)
-
Step 950
950 (this color)
#510104
oklch(27.5% 0.111 27)
#510104 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) | #1D1903 | 0.123 |
| Deuteranopia (no green cones) | #312A01 | 0.108 |
| Tritanopia (no blue cones) | #5A0003 | 0.022 |
| Achromatopsia (no color) | #242424 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #510104
#510104
oklch(27.5% 0.111 27)
- #002E33
#002E33
oklch(27.5% 0.047 206.2)
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 #510104, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.018
- Deep Brown #410200 ΔE 0.040
- Chocolate Brown #411900 ΔE 0.052
- Dark Maroon #3C0008 ΔE 0.054
- Burgundy #610023 ΔE 0.056
- Claret #680018 ΔE 0.060
- Reddy Brown #6E1005 ΔE 0.076
- Dark Brown #341C02 ΔE 0.078
Use #510104 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.