#230303
Closest named color: Very Dark Brown (#1D0200). oklch(16.9% 0.058 25.9), rgb(35, 3, 3).
Aa
White text reads best on this color (19.34:1).
About this color
#230303 is a very dark, muted red. In OKLCH its lightness is 17%, its chroma 0.058 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.020 away. White text reads best on it, at 19.34:1.
| Hue family | Reds |
| Lightness | very dark (17%) |
| Chroma | muted (0.058) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.08:1 |
| White text | 19.34:1 |
Values
| HEX | #230303 |
| RGB | rgb(35, 3, 3) |
| HSL | hsl(0, 84%, 7%) |
| OKLCH | oklch(16.9% 0.058 25.9) |
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 #230303 | 19.34:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #230303 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #230303 text on white | 19.34:1 | AAA | Lc 105.2 | Preferred for body text |
| #230303 text on black | 1.08:1 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F7E5E3
oklch(93.6% 0.02 25.2)
-
Step 200
200
#F1D0CC
oklch(88.4% 0.038 26.1)
-
Step 300
300
#EAB0AA
oklch(80.9% 0.069 25.4)
-
Step 400
400
#DC857D
oklch(70.7% 0.108 25.8)
-
Step 500
500
#D0635C
oklch(63% 0.139 25.6)
-
Step 600
600
#BC4742
oklch(55.6% 0.152 25.7)
-
Step 700
700
#A13834
oklch(49.1% 0.14 25.8)
-
Step 800
800
#832F2B
oklch(42.7% 0.117 26)
-
Step 900
900
#6A2B27
oklch(37.8% 0.091 26)
-
Step 950
950 (this color)
#230303
oklch(16.9% 0.058 25.9)
#230303 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) | #0B0903 | 0.062 |
| Deuteranopia (no green cones) | #131002 | 0.057 |
| Tritanopia (no blue cones) | #280003 | 0.014 |
| Achromatopsia (no color) | #0E0E0E | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #230303
#230303
oklch(16.9% 0.058 25.9)
- #001315
#001315
oklch(17% 0.029 203.1)
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 #230303, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.020
- Dark Maroon #3C0008 ΔE 0.065
- Almost Black #070D0D ΔE 0.070
- Deep Brown #410200 ΔE 0.078
- Rich Navy #001219 ΔE 0.088
- Dark Brown #341C02 ΔE 0.092
- Rich Black #0D1B2A ΔE 0.099
- Mahogany #4A0100 ΔE 0.100
Use #230303 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.