#028B91
Closest named color: Dark Cyan (#008B8B). oklch(57.9% 0.098 200.2), rgb(2, 139, 145).
Aa
Black text reads best on this color (5.10:1).
About this color
#028B91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.098 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.010 away. Black text reads best on it, at 5.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #028B91 |
| RGB | rgb(2, 139, 145) |
| HSL | hsl(183, 97%, 29%) |
| OKLCH | oklch(57.9% 0.098 200.2) |
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 #028B91 | 4.11:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #028B91 | 5.10:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #028B91 text on white | 4.11:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #028B91 text on black | 5.10:1 | AA | Lc -34.0 | 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
#E1EDED
oklch(93.7% 0.013 196.9)
-
Step 200
200
#C7DEDF
oklch(88.4% 0.025 199.9)
-
Step 300
300
#A0CACC
oklch(81% 0.044 199.9)
-
Step 400
400
#68AEB2
oklch(70.6% 0.071 200.4)
-
Step 500
500
#379A9F
oklch(63.2% 0.09 199.9)
-
Step 600
600 (this color)
#028B91
oklch(57.9% 0.098 200.2)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#0D4B4E
oklch(37.8% 0.059 199.9)
-
Step 950
950
#0B2C2E
oklch(27% 0.038 200.8)
#028B91 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) | #7F8492 | 0.099 |
| Deuteranopia (no green cones) | #6F7892 | 0.093 |
| Tritanopia (no blue cones) | #00918D | 0.021 |
| Achromatopsia (no color) | #7D7D7D | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #028B91
#028B91
oklch(57.9% 0.098 200.2)
- #AD6161
#AD6161
oklch(57.9% 0.099 20.5)
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 #028B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.010
- Teal Green #0A9396 ΔE 0.024
- Teal Blue #01889F ΔE 0.026
- Teal #008080 ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.046
- Ocean #017B92 ΔE 0.050
- Blue Green #0F9B8E ΔE 0.051
- Sea #3C9992 ΔE 0.052
Use #028B91 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.