#21443E
Closest named color: Dark Teal (#014D4E). oklch(35.8% 0.042 181.4), rgb(33, 68, 62).
Aa
White text reads best on this color (10.70:1).
About this color
#21443E is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.042 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.035 away. White text reads best on it, at 10.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.96:1 |
| White text | 10.70:1 |
Values
| HEX | #21443E |
| RGB | rgb(33, 68, 62) |
| HSL | hsl(170, 35%, 20%) |
| OKLCH | oklch(35.8% 0.042 181.4) |
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 #21443E | 10.70:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #21443E | 1.96:1 | Fails | Lc 9.2 | Not readable |
| #21443E text on white | 10.70:1 | AAA | Lc 94.7 | Preferred for body text |
| #21443E text on black | 1.96:1 | Fails | Lc -7.9 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C2
oklch(81% 0.032 181.6)
-
Step 400
400
#7EABA2
oklch(70.6% 0.05 181.1)
-
Step 500
500
#5B978C
oklch(63.2% 0.065 181.1)
-
Step 600
600
#3E8176
oklch(55.6% 0.071 181.5)
-
Step 700
700
#306D63
oklch(49.1% 0.065 181.3)
-
Step 800
800
#295951
oklch(42.8% 0.054 181.4)
-
Step 900
900 (this color)
#21443E
oklch(35.8% 0.042 181.4)
-
Step 950
950
#172B27
oklch(27.1% 0.027 180)
#21443E 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) | #41403E | 0.045 |
| Deuteranopia (no green cones) | #3B3C3F | 0.043 |
| Tritanopia (no blue cones) | #124542 | 0.013 |
| Achromatopsia (no color) | #3E3E3E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21443E
#21443E
oklch(35.8% 0.042 181.4)
- #4F333B
#4F333B
oklch(35.7% 0.042 0.8)
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 #21443E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.035
- Charcoal #264653 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.039
- Onyx #343A40 ΔE 0.041
- Evergreen #05472A ΔE 0.045
- Dark Blue Green #005249 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
Use #21443E 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.