#28A4AA
Closest named color: Cadet Blue (#5F9EA0). oklch(65.7% 0.103 199.9), rgb(40, 164, 170).
Aa
Black text reads best on this color (6.98:1).
About this color
#28A4AA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.103 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.038 away. Black text reads best on it, at 6.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.98:1 |
| White text | 3.00:1 |
Values
| HEX | #28A4AA |
| RGB | rgb(40, 164, 170) |
| HSL | hsl(183, 62%, 41%) |
| OKLCH | oklch(65.7% 0.103 199.9) |
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 #28A4AA | 3.00:1 | AA large text | Lc -61.7 | Content text, not long reading |
| Black text on #28A4AA | 6.98:1 | AA | Lc 47.7 | Large or bold text, headings |
| #28A4AA text on white | 3.00:1 | AA large text | Lc 56.4 | Large or bold text, headings |
| #28A4AA text on black | 6.98:1 | AA | Lc -45.4 | Large or bold text, headings |
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 500.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C5DFE0
oklch(88.5% 0.028 199.5)
-
Step 300
300
#9BCBCD
oklch(80.9% 0.05 199.4)
-
Step 400
400
#5EB0B4
oklch(70.7% 0.08 199.7)
-
Step 500
500 (this color)
#28A4AA
oklch(65.7% 0.103 199.9)
-
Step 600
600
#008489
oklch(55.7% 0.095 199.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#052D2F
oklch(27.2% 0.042 200)
#28A4AA 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) | #979CAB | 0.104 |
| Deuteranopia (no green cones) | #858FAB | 0.097 |
| Tritanopia (no blue cones) | #00AAA6 | 0.022 |
| Achromatopsia (no color) | #959595 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28A4AA
#28A4AA
oklch(65.7% 0.103 199.9)
- #C97777
#C97777
oklch(65.8% 0.103 20.2)
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 #28A4AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.038
- Sea #3C9992 ΔE 0.040
- Persian Green #2A9D8F ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.041
- Turquoise Blue #06B1C4 ΔE 0.045
- Blue Green #0F9B8E ΔE 0.047
- Dull Teal #5F9E8F ΔE 0.048
- Grey Teal #5E9B8A ΔE 0.052
Use #28A4AA 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.