#05232C
Closest named color: Rich Black (#0D1B2A). oklch(23.9% 0.039 221.6), rgb(5, 35, 44).
Aa
White text reads best on this color (16.36:1).
About this color
#05232C is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.039 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 16.36:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.28:1 |
| White text | 16.36:1 |
Values
| HEX | #05232C |
| RGB | rgb(5, 35, 44) |
| HSL | hsl(194, 80%, 10%) |
| OKLCH | oklch(23.9% 0.039 221.6) |
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 #05232C | 16.36:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #05232C | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #05232C text on white | 16.36:1 | AAA | Lc 103.2 | Preferred for body text |
| #05232C text on black | 1.28:1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6BABC1
oklch(70.6% 0.073 221.9)
-
Step 500
500
#3C96B2
oklch(63.1% 0.094 221.9)
-
Step 600
600
#03809D
oklch(55.6% 0.101 221.2)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#01586D
oklch(42.7% 0.078 221.4)
-
Step 900
900
#124959
oklch(37.8% 0.061 221.6)
-
Step 950
950 (this color)
#05232C
oklch(23.9% 0.039 221.6)
#05232C 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) | #1E222C | 0.032 |
| Deuteranopia (no green cones) | #181E2C | 0.027 |
| Tritanopia (no blue cones) | #002626 | 0.019 |
| Achromatopsia (no color) | #202020 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05232C
#05232C
oklch(23.9% 0.039 221.6)
- #2E1810
#2E1810
oklch(23.7% 0.039 40.6)
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 #05232C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.030
- Jet #212529 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.042
- Rich Navy #001219 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.076
- Gunmetal #293241 ΔE 0.080
- Navy Blue #001146 ΔE 0.082
Use #05232C 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.