#28C9B8
Closest named color: Dark Turquoise (#00CED1). oklch(75.4% 0.127 183.8), rgb(40, 201, 184).
Aa
Black text reads best on this color (10.13:1).
About this color
#28C9B8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.127 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.034 away. Black text reads best on it, at 10.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.13:1 |
| White text | 2.07:1 |
Values
| HEX | #28C9B8 |
| RGB | rgb(40, 201, 184) |
| HSL | hsl(174, 67%, 47%) |
| OKLCH | oklch(75.4% 0.127 183.8) |
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 #28C9B8 | 2.07:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #28C9B8 | 10.13:1 | AAA | Lc 64.0 | Content text, not long reading |
| #28C9B8 text on white | 2.07:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #28C9B8 text on black | 10.13:1 | AAA | Lc -62.4 | Content text, not long reading |
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 400.
-
Step 50
50
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DAEFEB
oklch(93.6% 0.023 183.2)
-
Step 200
200
#BAE3DC
oklch(88.5% 0.044 183.8)
-
Step 300
300
#84D2C6
oklch(81% 0.079 183.5)
-
Step 400
400 (this color)
#28C9B8
oklch(75.4% 0.127 183.8)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#28C9B8 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) | #BFBDB7 | 0.135 |
| Deuteranopia (no green cones) | #AAAEBA | 0.127 |
| Tritanopia (no blue cones) | #00CDC4 | 0.017 |
| Achromatopsia (no color) | #B4B4B4 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28C9B8
#28C9B8
oklch(75.4% 0.127 183.8)
- #F28CA6
#F28CA6
oklch(75.5% 0.127 4.2)
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 #28C9B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.034
- Medium Turquoise #48D1CC ΔE 0.038
- Topaz #13BBAF ΔE 0.041
- Medium Aquamarine #66CDAA ΔE 0.042
- Seafoam Blue #78D1B6 ΔE 0.058
- Emerald #06D6A0 ΔE 0.058
- Pale Teal #82CBB2 ΔE 0.060
- Greenblue #23C48B ΔE 0.062
Use #28C9B8 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.