#051D22
Closest named color: Rich Black (#0D1B2A). oklch(21.4% 0.031 213.5), rgb(5, 29, 34).
Aa
White text reads best on this color (17.42:1).
About this color
#051D22 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.031 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 17.42:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.42:1 |
Values
| HEX | #051D22 |
| RGB | rgb(5, 29, 34) |
| HSL | hsl(190, 74%, 8%) |
| OKLCH | oklch(21.4% 0.031 213.5) |
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 #051D22 | 17.42:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #051D22 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #051D22 text on white | 17.42:1 | AAA | Lc 104.2 | Preferred for body text |
| #051D22 text on black | 1.20:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A6C7CF
oklch(80.8% 0.037 214)
-
Step 400
400
#75ABB7
oklch(70.8% 0.059 213.1)
-
Step 500
500
#4D96A5
oklch(63.2% 0.076 212.7)
-
Step 600
600
#2B8090
oklch(55.7% 0.083 212.6)
-
Step 700
700
#1C6C7B
oklch(49.2% 0.077 213.2)
-
Step 800
800
#1B5864
oklch(42.7% 0.064 213.4)
-
Step 900
900
#1D4851
oklch(37.5% 0.05 213.5)
-
Step 950
950 (this color)
#051D22
oklch(21.4% 0.031 213.5)
#051D22 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) | #191C22 | 0.028 |
| Deuteranopia (no green cones) | #151922 | 0.025 |
| Tritanopia (no blue cones) | #001F1F | 0.013 |
| Achromatopsia (no color) | #1A1A1A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051D22
#051D22
oklch(21.4% 0.031 213.5)
- #261410
#261410
oklch(21.5% 0.031 33.2)
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 #051D22, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Rich Navy #001219 ΔE 0.046
- Dark #1B2431 ΔE 0.049
- Jet #212529 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.064
- Almost Black #070D0D ΔE 0.066
- Navy Blue #001146 ΔE 0.085
- Dark Forest Green #002D04 ΔE 0.089
Use #051D22 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.