#09211F
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.03 187.9), rgb(9, 33, 31).
Aa
White text reads best on this color (16.81:1).
About this color
#09211F is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.030 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.036 away. White text reads best on it, at 16.81:1.
| 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 | 16.81:1 |
Values
| HEX | #09211F |
| RGB | rgb(9, 33, 31) |
| HSL | hsl(175, 57%, 8%) |
| OKLCH | oklch(22.8% 0.03 187.9) |
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 #09211F | 16.81:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #09211F | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #09211F text on white | 16.81:1 | AAA | Lc 103.6 | Preferred for body text |
| #09211F 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
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A8C8C5
oklch(80.8% 0.035 189.5)
-
Step 400
400
#77ADA7
oklch(70.8% 0.058 187.3)
-
Step 500
500
#509891
oklch(63.1% 0.073 187.3)
-
Step 600
600
#30827C
oklch(55.5% 0.079 188.4)
-
Step 700
700
#216E68
oklch(49.1% 0.074 187.6)
-
Step 800
800
#1E5A55
oklch(42.8% 0.062 187.4)
-
Step 900
900
#204A46
oklch(37.8% 0.047 187.1)
-
Step 950
950 (this color)
#09211F
oklch(22.8% 0.03 187.9)
#09211F 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) | #1F1F1F | 0.032 |
| Deuteranopia (no green cones) | #1B1C1F | 0.030 |
| Tritanopia (no blue cones) | #002220 | 0.009 |
| Achromatopsia (no color) | #1D1D1D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09211F
#09211F
oklch(22.8% 0.03 187.9)
- #29161A
#29161A
oklch(22.8% 0.032 6.2)
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 #09211F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.036
- Jet #212529 ΔE 0.043
- Dark #1B2431 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.061
- Rich Navy #001219 ΔE 0.062
- Dark Forest Green #002D04 ΔE 0.071
- Very Dark Green #062E03 ΔE 0.074
- Almost Black #070D0D ΔE 0.078
Use #09211F 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.