#218990
Closest named color: Dark Cyan (#008B8B). oklch(57.7% 0.09 201.8), rgb(33, 137, 144).
Aa
Black text reads best on this color (5.04:1).
About this color
#218990 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.090 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.014 away. Black text reads best on it, at 5.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #218990 |
| RGB | rgb(33, 137, 144) |
| HSL | hsl(184, 63%, 35%) |
| OKLCH | oklch(57.7% 0.09 201.8) |
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 #218990 | 4.16:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #218990 | 5.04:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #218990 text on white | 4.16:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #218990 text on black | 5.04:1 | AA | Lc -33.4 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A3C9CC
oklch(80.9% 0.041 202.3)
-
Step 400
400
#6EADB2
oklch(70.7% 0.065 202.2)
-
Step 500
500
#42989F
oklch(63% 0.083 202.6)
-
Step 600
600 (this color)
#218990
oklch(57.7% 0.09 201.8)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#0B5A5F
oklch(42.7% 0.069 201.8)
-
Step 900
900
#164A4E
oklch(37.7% 0.054 202.4)
-
Step 950
950
#0F2B2D
oklch(26.9% 0.034 201.6)
#218990 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) | #7E8391 | 0.091 |
| Deuteranopia (no green cones) | #6E7790 | 0.084 |
| Tritanopia (no blue cones) | #008F8B | 0.023 |
| Achromatopsia (no color) | #7C7C7C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218990
#218990
oklch(57.7% 0.09 201.8)
- #A86361
#A86361
oklch(57.6% 0.09 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 #218990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.014
- Teal Blue #01889F ΔE 0.025
- Teal Green #0A9396 ΔE 0.028
- Teal #008080 ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.043
- Ocean #017B92 ΔE 0.047
- Blue NCS #118AB2 ΔE 0.053
- Sea #3C9992 ΔE 0.053
Use #218990 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.