#09211E
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.03 184.3), rgb(9, 33, 30).
Aa
White text reads best on this color (16.82:1).
About this color
#09211E is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.030 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.038 away. White text reads best on it, at 16.82:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #09211E |
| RGB | rgb(9, 33, 30) |
| HSL | hsl(173, 57%, 8%) |
| OKLCH | oklch(22.8% 0.03 184.3) |
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 #09211E | 16.82:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #09211E | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #09211E text on white | 16.82:1 | AAA | Lc 103.7 | Preferred for body text |
| #09211E text on black | 1.24:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A8C9C3
oklch(81% 0.036 183.2)
-
Step 400
400
#77ADA5
oklch(70.8% 0.058 184.5)
-
Step 500
500
#51988F
oklch(63.1% 0.073 184.9)
-
Step 600
600
#308379
oklch(55.7% 0.081 184.1)
-
Step 700
700
#226E66
oklch(49% 0.074 185.1)
-
Step 800
800
#1F5A53
oklch(42.7% 0.062 184.4)
-
Step 900
900
#204A45
oklch(37.7% 0.048 185.1)
-
Step 950
950 (this color)
#09211E
oklch(22.8% 0.03 184.3)
#09211E 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) | #1F1F1E | 0.032 |
| Deuteranopia (no green cones) | #1B1C1E | 0.030 |
| Tritanopia (no blue cones) | #002220 | 0.009 |
| Achromatopsia (no color) | #1D1D1D | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09211E
#09211E
oklch(22.8% 0.03 184.3)
- #29161B
#29161B
oklch(22.8% 0.032 2.8)
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 #09211E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.038
- Jet #212529 ΔE 0.044
- Dark #1B2431 ΔE 0.046
- Rich Navy #001219 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.063
- Dark Forest Green #002D04 ΔE 0.070
- Very Dark Green #062E03 ΔE 0.073
- Almost Black #070D0D ΔE 0.078
Use #09211E 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.