#09231B
Closest named color: Jet (#212529). oklch(23.3% 0.036 170.1), rgb(9, 35, 27).
Aa
White text reads best on this color (16.56:1).
About this color
#09231B is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.036 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.046 away. White text reads best on it, at 16.56:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.56:1 |
Values
| HEX | #09231B |
| RGB | rgb(9, 35, 27) |
| HSL | hsl(162, 59%, 9%) |
| OKLCH | oklch(23.3% 0.036 170.1) |
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 #09231B | 16.56:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #09231B | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #09231B text on white | 16.56:1 | AAA | Lc 103.4 | Preferred for body text |
| #09231B 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
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A7CABC
oklch(80.9% 0.042 169)
-
Step 400
400
#75AF9A
oklch(70.8% 0.068 169.6)
-
Step 500
500
#4D9A81
oklch(63% 0.086 170)
-
Step 600
600
#2B856B
oklch(55.6% 0.094 170.1)
-
Step 700
700
#1C7059
oklch(49% 0.087 170.2)
-
Step 800
800
#1B5C49
oklch(42.8% 0.073 169.8)
-
Step 900
900
#1D4B3D
oklch(37.6% 0.056 170.5)
-
Step 950
950 (this color)
#09231B
oklch(23.3% 0.036 170.1)
#09231B 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) | #22201B | 0.037 |
| Deuteranopia (no green cones) | #1E1D1C | 0.036 |
| Tritanopia (no blue cones) | #012321 | 0.013 |
| Achromatopsia (no color) | #1F1F1F | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09231B
#09231B
oklch(23.3% 0.036 170.1)
- #2A1620
#2A1620
oklch(23.2% 0.036 348.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #09231B
These curated palettes and gradients contain exactly #09231B. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.049
- Dark #1B2431 ΔE 0.051
- Dark Forest Green #002D04 ΔE 0.059
- Very Dark Green #062E03 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.067
- Rich Navy #001219 ΔE 0.071
- Dark Brown #341C02 ΔE 0.075
Use #09231B 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.