#21444D
Closest named color: Charcoal (#264653). oklch(36.4% 0.043 216.5), rgb(33, 68, 77).
Aa
White text reads best on this color (10.50:1).
About this color
#21444D is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.043 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.013 away. White text reads best on it, at 10.50:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #21444D |
| RGB | rgb(33, 68, 77) |
| HSL | hsl(192, 40%, 22%) |
| OKLCH | oklch(36.4% 0.043 216.5) |
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 #21444D | 10.50:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #21444D | 1.99:1 | Fails | Lc 9.7 | Not readable |
| #21444D text on white | 10.50:1 | AAA | Lc 94.3 | Preferred for body text |
| #21444D text on black | 1.99:1 | Fails | Lc -8.3 | 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 900.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#AAC6CE
oklch(80.8% 0.032 216.9)
-
Step 400
400
#7CA9B6
oklch(70.7% 0.052 217.5)
-
Step 500
500
#5894A3
oklch(63.1% 0.066 215.6)
-
Step 600
600
#3B7E8F
oklch(55.7% 0.072 216.8)
-
Step 700
700
#2D6A79
oklch(49.1% 0.067 216.5)
-
Step 800
800
#265763
oklch(42.8% 0.056 216.1)
-
Step 900
900 (this color)
#21444D
oklch(36.4% 0.043 216.5)
-
Step 950
950
#162A2F
oklch(27% 0.027 215.5)
#21444D 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) | #3E424E | 0.039 |
| Deuteranopia (no green cones) | #373D4D | 0.034 |
| Tritanopia (no blue cones) | #054747 | 0.025 |
| Achromatopsia (no color) | #3F3F3F | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21444D
#21444D
oklch(36.4% 0.043 216.5)
- #52362E
#52362E
oklch(36.3% 0.043 36.6)
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 #21444D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.013
- Dark Grey Blue #29465B ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.031
- Dark Teal #014D4E ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.037
- Onyx #343A40 ΔE 0.038
- Midnight Green #073B4C ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.042
Use #21444D 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.