#09212E
Closest named color: Rich Black (#0D1B2A). oklch(23.6% 0.039 235.5), rgb(9, 33, 46).
Aa
White text reads best on this color (16.55:1).
About this color
#09212E is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.039 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 16.55:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.55:1 |
Values
| HEX | #09212E |
| RGB | rgb(9, 33, 46) |
| HSL | hsl(201, 67%, 11%) |
| OKLCH | oklch(23.6% 0.039 235.5) |
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 #09212E | 16.55:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #09212E | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #09212E text on white | 16.55:1 | AAA | Lc 103.4 | Preferred for body text |
| #09212E 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DB
oklch(80.9% 0.046 236.1)
-
Step 400
400
#73A8C8
oklch(70.6% 0.073 235.7)
-
Step 500
500
#4B92BA
oklch(63% 0.093 235.6)
-
Step 600
600
#287CA6
oklch(55.6% 0.102 235)
-
Step 700
700
#19688F
oklch(49% 0.095 235.8)
-
Step 800
800
#195574
oklch(42.7% 0.079 235.8)
-
Step 900
900
#1C465E
oklch(37.6% 0.062 236.8)
-
Step 950
950 (this color)
#09212E
oklch(23.6% 0.039 235.5)
#09212E 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) | #1B212F | 0.024 |
| Deuteranopia (no green cones) | #161D2E | 0.020 |
| Tritanopia (no blue cones) | #002425 | 0.026 |
| Achromatopsia (no color) | #1F1F1F | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09212E
#09212E
oklch(23.6% 0.039 235.5)
- #2C190B
#2C190B
oklch(23.5% 0.039 55.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #09212E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Dark #1B2431 ΔE 0.028
- Oxford Blue #1B263B ΔE 0.039
- Jet #212529 ΔE 0.040
- Rich Navy #001219 ΔE 0.068
- Navy Blue #001146 ΔE 0.074
- Space Cadet #2B2D42 ΔE 0.075
- Gunmetal #293241 ΔE 0.081
Use #09212E 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.