#21868D
Closest named color: Dark Cyan (#008B8B). oklch(56.8% 0.088 202), rgb(33, 134, 141).
Aa
Black text reads best on this color (4.85:1).
About this color
#21868D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.088 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.018 away. Black text reads best on it, at 4.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #21868D |
| RGB | rgb(33, 134, 141) |
| HSL | hsl(184, 62%, 34%) |
| OKLCH | oklch(56.8% 0.088 202) |
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 #21868D | 4.32:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #21868D | 4.85:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #21868D text on white | 4.32:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #21868D text on black | 4.85:1 | AA | Lc -32.1 | Non-text elements, placeholder text |
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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A4C9CB
oklch(81% 0.039 200.5)
-
Step 400
400
#70ADB1
oklch(70.8% 0.063 201.1)
-
Step 500
500
#44989E
oklch(63.1% 0.081 201.7)
-
Step 600
600 (this color)
#21868D
oklch(56.8% 0.088 202)
-
Step 700
700
#076E75
oklch(49.1% 0.082 202.7)
-
Step 800
800
#0F5A5F
oklch(42.8% 0.068 201.9)
-
Step 900
900
#184A4E
oklch(37.8% 0.053 202.6)
-
Step 950
950
#102B2D
oklch(26.9% 0.033 201.9)
#21868D 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) | #7B808E | 0.088 |
| Deuteranopia (no green cones) | #6C758D | 0.081 |
| Tritanopia (no blue cones) | #008B88 | 0.021 |
| Achromatopsia (no color) | #7A7A7A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21868D
#21868D
oklch(56.8% 0.088 202)
- #A5615F
#A5615F
oklch(56.8% 0.089 22)
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 #21868D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.018
- Teal Blue #01889F ΔE 0.027
- Teal #008080 ΔE 0.028
- Teal Green #0A9396 ΔE 0.037
- Ocean #017B92 ΔE 0.040
- Bluegreen #017A79 ΔE 0.046
- Deep Aqua #08787F ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.049
Use #21868D 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.