#230309
Closest named color: Very Dark Brown (#1D0200). oklch(17.1% 0.057 11.8), rgb(35, 3, 9).
Aa
White text reads best on this color (19.29:1).
About this color
#230309 is a very dark, muted red. In OKLCH its lightness is 17%, its chroma 0.057 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.030 away. White text reads best on it, at 19.29:1.
| Hue family | Reds |
| Lightness | very dark (17%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.08:1 |
| White text | 19.29:1 |
Values
| HEX | #230309 |
| RGB | rgb(35, 3, 9) |
| HSL | hsl(349, 84%, 7%) |
| OKLCH | oklch(17.1% 0.057 11.8) |
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 #230309 | 19.29:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #230309 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #230309 text on white | 19.29:1 | AAA | Lc 105.2 | Preferred for body text |
| #230309 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
#FBF3F4
oklch(97.1% 0.009 8.5)
-
Step 100
100
#F7E5E6
oklch(93.7% 0.02 13.6)
-
Step 200
200
#F1D0D2
oklch(88.6% 0.037 13.7)
-
Step 300
300
#E9AFB5
oklch(80.9% 0.068 11.8)
-
Step 400
400
#DB838F
oklch(70.7% 0.109 11.4)
-
Step 500
500
#CF6173
oklch(63.1% 0.14 11.8)
-
Step 600
600
#BA455C
oklch(55.6% 0.151 11.6)
-
Step 700
700
#A0364B
oklch(49.1% 0.14 12.1)
-
Step 800
800
#822E3E
oklch(42.8% 0.116 12)
-
Step 900
900
#692A35
oklch(37.8% 0.091 11.7)
-
Step 950
950 (this color)
#230309
oklch(17.1% 0.057 11.8)
#230309 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) | #0A0A09 | 0.064 |
| Deuteranopia (no green cones) | #131108 | 0.059 |
| Tritanopia (no blue cones) | #270005 | 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°).
- #230309
#230309
oklch(17.1% 0.057 11.8)
- #001413
#001413
oklch(17.3% 0.03 190.8)
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 #230309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.030
- Dark Maroon #3C0008 ΔE 0.064
- Almost Black #070D0D ΔE 0.070
- Deep Brown #410200 ΔE 0.080
- Rich Navy #001219 ΔE 0.086
- Very Dark Purple #2A0134 ΔE 0.088
- Midnight Purple #280137 ΔE 0.093
- Rich Black #0D1B2A ΔE 0.094
Use #230309 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.