#00212C
Closest named color: Rich Black (#0D1B2A). oklch(23% 0.043 224.3), rgb(0, 33, 44).
Aa
White text reads best on this color (16.74:1).
About this color
#00212C is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.043 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 16.74:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.74:1 |
Values
| HEX | #00212C |
| RGB | rgb(0, 33, 44) |
| HSL | hsl(195, 100%, 9%) |
| OKLCH | oklch(23% 0.043 224.3) |
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 #00212C | 16.74:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #00212C | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #00212C text on white | 16.74:1 | AAA | Lc 103.4 | Preferred for body text |
| #00212C text on black | 1.25:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE7
oklch(88.6% 0.028 222.3)
-
Step 300
300
#9DC8DA
oklch(80.8% 0.052 225.4)
-
Step 400
400
#64ACC7
oklch(70.7% 0.082 224.3)
-
Step 500
500
#2D97B9
oklch(63.2% 0.105 224.1)
-
Step 600
600
#0080A1
oklch(55.7% 0.105 224.1)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#06495C
oklch(37.7% 0.068 223.5)
-
Step 950
950 (this color)
#00212C
oklch(23% 0.043 224.3)
#00212C 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) | #1B202D | 0.034 |
| Deuteranopia (no green cones) | #151C2C | 0.029 |
| Tritanopia (no blue cones) | #002425 | 0.020 |
| Achromatopsia (no color) | #1E1E1E | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00212C
#00212C
oklch(23% 0.043 224.3)
- #2E160B
#2E160B
oklch(23.2% 0.044 44.7)
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 #00212C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Dark #1B2431 ΔE 0.037
- Jet #212529 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.048
- Rich Navy #001219 ΔE 0.062
- Navy Blue #001146 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.084
- Almost Black #070D0D ΔE 0.085
Use #00212C 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.