#231013
Closest named color: Very Dark Brown (#1D0200). oklch(20.2% 0.032 10.2), rgb(35, 16, 19).
Aa
White text reads best on this color (18.18:1).
About this color
#231013 is a very dark, muted red. In OKLCH its lightness is 20%, its chroma 0.032 and its hue 10°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.058 away. White text reads best on it, at 18.18:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #231013 |
| RGB | rgb(35, 16, 19) |
| HSL | hsl(351, 37%, 10%) |
| OKLCH | oklch(20.2% 0.032 10.2) |
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 #231013 | 18.18:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #231013 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #231013 text on white | 18.18:1 | AAA | Lc 104.8 | Preferred for body text |
| #231013 text on black | 1.15:1 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E8
oklch(93.6% 0.011 10.3)
-
Step 200
200
#E7D4D6
oklch(88.6% 0.021 10.3)
-
Step 300
300
#D8B7BB
oklch(80.9% 0.038 9.7)
-
Step 400
400
#C39198
oklch(70.6% 0.061 9.4)
-
Step 500
500
#B3767E
oklch(63.1% 0.077 10.9)
-
Step 600
600
#9E5E68
oklch(55.7% 0.084 10.1)
-
Step 700
700
#874D56
oklch(49.1% 0.079 10.4)
-
Step 800
800
#6E3F47
oklch(42.7% 0.066 9.3)
-
Step 900
900
#59363B
oklch(37.7% 0.051 10.5)
-
Step 950
950 (this color)
#231013
oklch(20.2% 0.032 10.2)
#231013 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) | #131313 | 0.036 |
| Deuteranopia (no green cones) | #181713 | 0.033 |
| Tritanopia (no blue cones) | #260E11 | 0.009 |
| Achromatopsia (no color) | #151515 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231013
#231013
oklch(20.2% 0.032 10.2)
- #021B1A
#021B1A
oklch(20.2% 0.032 191.4)
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 #231013, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.061
- Dark Maroon #3C0008 ΔE 0.063
- Almost Black #070D0D ΔE 0.065
- Dark Brown #341C02 ΔE 0.068
- Rich Navy #001219 ΔE 0.069
- Jet #212529 ΔE 0.071
- Deep Brown #410200 ΔE 0.074
Use #231013 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.