#230F17
Closest named color: Rich Black (#0D1B2A). oklch(20.1% 0.036 355.4), rgb(35, 15, 23).
Aa
White text reads best on this color (18.22:1).
About this color
#230F17 is a very dark, muted red. In OKLCH its lightness is 20%, its chroma 0.036 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.059 away. White text reads best on it, at 18.22:1.
| Hue family | Reds |
| Lightness | very dark (20%) |
| Chroma | muted (0.036) |
| Temperature | warm |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.22:1 |
Values
| HEX | #230F17 |
| RGB | rgb(35, 15, 23) |
| HSL | hsl(336, 40%, 10%) |
| OKLCH | oklch(20.1% 0.036 355.4) |
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 #230F17 | 18.22:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #230F17 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #230F17 text on white | 18.22:1 | AAA | Lc 104.8 | Preferred for body text |
| #230F17 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F1E7EA
oklch(93.7% 0.012 357)
-
Step 200
200
#E7D3DA
oklch(88.5% 0.024 354.3)
-
Step 300
300
#D8B6C2
oklch(80.9% 0.042 354.8)
-
Step 400
400
#C48FA2
oklch(70.7% 0.069 355.7)
-
Step 500
500
#B4738C
oklch(63.2% 0.088 355.2)
-
Step 600
600
#9F5B76
oklch(55.7% 0.095 355.3)
-
Step 700
700
#874A63
oklch(49% 0.088 354.8)
-
Step 800
800
#6E3D51
oklch(42.6% 0.073 354.7)
-
Step 900
900
#593443
oklch(37.5% 0.057 354.3)
-
Step 950
950 (this color)
#230F17
oklch(20.1% 0.036 355.4)
#230F17 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) | #121317 | 0.038 |
| Deuteranopia (no green cones) | #171717 | 0.036 |
| Tritanopia (no blue cones) | #260E12 | 0.011 |
| Achromatopsia (no color) | #151515 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #230F17
#230F17
oklch(20.1% 0.036 355.4)
- #011C15
#011C15
oklch(20.3% 0.037 173.1)
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 #230F17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.059
- Very Dark Brown #1D0200 ΔE 0.061
- Dark Maroon #3C0008 ΔE 0.064
- Almost Black #070D0D ΔE 0.067
- Rich Navy #001219 ΔE 0.070
- Jet #212529 ΔE 0.073
- Very Dark Purple #2A0134 ΔE 0.074
- Dark #1B2431 ΔE 0.074
Use #230F17 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.