#21808F
Closest named color: Ocean (#017B92). oklch(55.4% 0.087 210.6), rgb(33, 128, 143).
Aa
White text reads best on this color (4.61:1).
About this color
#21808F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.087 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.021 away. White text reads best on it, at 4.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.54:1 |
| White text | 4.61:1 |
Values
| HEX | #21808F |
| RGB | rgb(33, 128, 143) |
| HSL | hsl(188, 63%, 35%) |
| OKLCH | oklch(55.4% 0.087 210.6) |
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 #21808F | 4.61:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #21808F | 4.54:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #21808F text on white | 4.61:1 | AA | Lc 71.7 | Content text, not long reading |
| #21808F text on black | 4.54:1 | AA | Lc -30.0 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#71ACB6
oklch(70.8% 0.063 209.3)
-
Step 500
500
#4897A5
oklch(63.2% 0.08 210.7)
-
Step 600
600 (this color)
#21808F
oklch(55.4% 0.087 210.6)
-
Step 700
700
#116D7A
oklch(49.2% 0.081 209.9)
-
Step 800
800
#145963
oklch(42.8% 0.067 209.4)
-
Step 900
900
#1A4951
oklch(37.7% 0.052 210.5)
-
Step 950
950
#112B2F
oklch(27% 0.033 208.6)
#21808F 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) | #747B90 | 0.082 |
| Deuteranopia (no green cones) | #64708F | 0.074 |
| Tritanopia (no blue cones) | #008685 | 0.029 |
| Achromatopsia (no color) | #757575 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21808F
#21808F
oklch(55.4% 0.087 210.6)
- #9F5F53
#9F5F53
oklch(55.4% 0.086 31.4)
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 #21808F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.021
- Teal #008080 ΔE 0.028
- Teal Blue #01889F ΔE 0.029
- Deep Aqua #08787F ΔE 0.034
- Dark Cyan #008B8B ΔE 0.036
- Bluegreen #017A79 ΔE 0.039
- Cerulean #457B9D ΔE 0.040
- Sea Blue #047495 ΔE 0.043
Use #21808F 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.