#07212D
Closest named color: Rich Black (#0D1B2A). oklch(23.4% 0.039 231.6), rgb(7, 33, 45).
Aa
White text reads best on this color (16.60:1).
About this color
#07212D is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.039 and its hue 232°. 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 16.60:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.60:1 |
Values
| HEX | #07212D |
| RGB | rgb(7, 33, 45) |
| HSL | hsl(199, 73%, 10%) |
| OKLCH | oklch(23.4% 0.039 231.6) |
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 #07212D | 16.60:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #07212D | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #07212D text on white | 16.60:1 | AAA | Lc 103.4 | Preferred for body text |
| #07212D 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C7DA
oklch(81% 0.046 231.8)
-
Step 400
400
#70A9C7
oklch(70.7% 0.074 232.2)
-
Step 500
500
#4693B8
oklch(63% 0.094 231.8)
-
Step 600
600
#207DA5
oklch(55.6% 0.103 232.1)
-
Step 700
700
#0F698D
oklch(49% 0.095 232.1)
-
Step 800
800
#135672
oklch(42.7% 0.078 231.4)
-
Step 900
900
#19475C
oklch(37.7% 0.061 231.4)
-
Step 950
950 (this color)
#07212D
oklch(23.4% 0.039 231.6)
#07212D 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) | #1B202E | 0.026 |
| Deuteranopia (no green cones) | #161D2D | 0.022 |
| Tritanopia (no blue cones) | #002425 | 0.023 |
| Achromatopsia (no color) | #1E1E1E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #07212D
#07212D
oklch(23.4% 0.039 231.6)
- #2C180C
#2C180C
oklch(23.3% 0.039 50.9)
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 #07212D, 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 0.030
- Jet #212529 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.041
- Rich Navy #001219 ΔE 0.066
- Navy Blue #001146 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.077
- Gunmetal #293241 ΔE 0.083
Use #07212D 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.