#021D23
Closest named color: Rich Black (#0D1B2A). oklch(21.3% 0.035 214.7), rgb(2, 29, 35).
Aa
White text reads best on this color (17.46:1).
About this color
#021D23 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.035 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.023 away. White text reads best on it, at 17.46:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.46:1 |
Values
| HEX | #021D23 |
| RGB | rgb(2, 29, 35) |
| HSL | hsl(191, 89%, 7%) |
| OKLCH | oklch(21.3% 0.035 214.7) |
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 #021D23 | 17.46:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #021D23 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #021D23 text on white | 17.46:1 | AAA | Lc 104.1 | Preferred for body text |
| #021D23 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A3C8D1
oklch(80.9% 0.041 214.2)
-
Step 400
400
#6FACBA
oklch(70.8% 0.066 213.8)
-
Step 500
500
#4397A9
oklch(63.2% 0.085 213.9)
-
Step 600
600
#188195
oklch(55.7% 0.093 214.6)
-
Step 700
700
#036D7F
oklch(49.2% 0.086 214.4)
-
Step 800
800
#0D5967
oklch(42.8% 0.071 214)
-
Step 900
900
#174954
oklch(37.7% 0.055 215.1)
-
Step 950
950 (this color)
#021D23
oklch(21.3% 0.035 214.7)
#021D23 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) | #191C23 | 0.032 |
| Deuteranopia (no green cones) | #141823 | 0.029 |
| Tritanopia (no blue cones) | #001F1F | 0.013 |
| Achromatopsia (no color) | #1A1A1A | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021D23
#021D23
oklch(21.3% 0.035 214.7)
- #27130E
#27130E
oklch(21.4% 0.035 34.9)
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 #021D23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.023
- Rich Navy #001219 ΔE 0.045
- Dark #1B2431 ΔE 0.051
- Jet #212529 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.065
- Almost Black #070D0D ΔE 0.066
- Navy Blue #001146 ΔE 0.083
- Dark Forest Green #002D04 ΔE 0.091
Use #021D23 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.