#23121A
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.031 350.4), rgb(35, 18, 26).
Aa
White text reads best on this color (17.90:1).
About this color
#23121A is a very dark, muted red. In OKLCH its lightness is 21%, its chroma 0.031 and its hue 350°. Its hue sits on the warm side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.052 away. White text reads best on it, at 17.90:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.90:1 |
Values
| HEX | #23121A |
| RGB | rgb(35, 18, 26) |
| HSL | hsl(332, 32%, 10%) |
| OKLCH | oklch(20.9% 0.031 350.4) |
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 #23121A | 17.90:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #23121A | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #23121A text on white | 17.90:1 | AAA | Lc 104.6 | Preferred for body text |
| #23121A text on black | 1.17:1 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#F0E7EB
oklch(93.6% 0.011 348.4)
-
Step 200
200
#E5D4DB
oklch(88.6% 0.021 350.6)
-
Step 300
300
#D4B7C4
oklch(80.8% 0.037 349.1)
-
Step 400
400
#BE92A5
oklch(70.7% 0.059 351)
-
Step 500
500
#AD778F
oklch(63.2% 0.075 351.2)
-
Step 600
600
#985F7A
oklch(55.7% 0.082 350.2)
-
Step 700
700
#824E66
oklch(49.1% 0.077 351.1)
-
Step 800
800
#694054
oklch(42.6% 0.064 349.4)
-
Step 900
900
#563745
oklch(37.8% 0.049 351)
-
Step 950
950 (this color)
#23121A
oklch(20.9% 0.031 350.4)
#23121A 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) | #14151A | 0.033 |
| Deuteranopia (no green cones) | #18181A | 0.030 |
| Tritanopia (no blue cones) | #251215 | 0.011 |
| Achromatopsia (no color) | #171717 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23121A
#23121A
oklch(20.9% 0.031 350.4)
- #071D16
#071D16
oklch(21% 0.032 169.8)
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 #23121A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.052
- Jet #212529 ΔE 0.063
- Dark #1B2431 ΔE 0.065
- Dark Maroon #3C0008 ΔE 0.067
- Rich Navy #001219 ΔE 0.069
- Very Dark Brown #1D0200 ΔE 0.070
- Almost Black #070D0D ΔE 0.070
- Dark Brown #341C02 ΔE 0.070
Use #23121A 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.