#09231C
Closest named color: Jet (#212529). oklch(23.3% 0.035 172.8), rgb(9, 35, 28).
Aa
White text reads best on this color (16.55:1).
About this color
#09231C is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.035 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.044 away. White text reads best on it, at 16.55:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.55:1 |
Values
| HEX | #09231C |
| RGB | rgb(9, 35, 28) |
| HSL | hsl(164, 59%, 9%) |
| OKLCH | oklch(23.3% 0.035 172.8) |
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 #09231C | 16.55:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #09231C | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #09231C text on white | 16.55:1 | AAA | Lc 103.4 | Preferred for body text |
| #09231C text on black | 1.26:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#75AE9C
oklch(70.6% 0.065 172.6)
-
Step 500
500
#4D9A84
oklch(63.1% 0.084 172.6)
-
Step 600
600
#2A856E
oklch(55.7% 0.092 172.6)
-
Step 700
700
#1B705C
oklch(49.1% 0.085 173.1)
-
Step 800
800
#1A5B4B
oklch(42.6% 0.07 173.1)
-
Step 900
900
#1D4B3F
oklch(37.7% 0.055 173.5)
-
Step 950
950 (this color)
#09231C
oklch(23.3% 0.035 172.8)
#09231C 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) | #22201C | 0.037 |
| Deuteranopia (no green cones) | #1E1D1C | 0.036 |
| Tritanopia (no blue cones) | #002321 | 0.012 |
| Achromatopsia (no color) | #1F1F1F | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09231C
#09231C
oklch(23.3% 0.035 172.8)
- #2A171F
#2A171F
oklch(23.4% 0.033 353.2)
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 #09231C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.047
- Dark #1B2431 ΔE 0.049
- Dark Forest Green #002D04 ΔE 0.060
- Very Dark Green #062E03 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.065
- Rich Navy #001219 ΔE 0.070
- Dark Brown #341C02 ΔE 0.076
Use #09231C 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.