#28756E
Closest named color: Dark Aquamarine (#017371). oklch(51.4% 0.075 186.7), rgb(40, 117, 110).
Aa
White text reads best on this color (5.44:1).
About this color
#28756E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.075 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.018 away. White text reads best on it, at 5.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #28756E |
| RGB | rgb(40, 117, 110) |
| HSL | hsl(175, 49%, 31%) |
| OKLCH | oklch(51.4% 0.075 186.7) |
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 #28756E | 5.44:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #28756E | 3.85:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #28756E text on white | 5.44:1 | AA | Lc 76.9 | Fine for body text |
| #28756E text on black | 3.85:1 | AA large text | Lc -24.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A7C9C4
oklch(81% 0.037 185.6)
-
Step 400
400
#76ADA6
oklch(70.7% 0.059 186)
-
Step 500
500
#4F9891
oklch(63% 0.074 187.4)
-
Step 600
600
#2E837B
oklch(55.7% 0.081 186.4)
-
Step 700
700 (this color)
#28756E
oklch(51.4% 0.075 186.7)
-
Step 800
800
#1D5A54
oklch(42.7% 0.062 186)
-
Step 900
900
#1F4A46
oklch(37.7% 0.048 187.2)
-
Step 950
950
#132B29
oklch(26.9% 0.03 188.5)
#28756E 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) | #6F6F6E | 0.080 |
| Deuteranopia (no green cones) | #63666F | 0.075 |
| Tritanopia (no blue cones) | #007873 | 0.015 |
| Achromatopsia (no color) | #6A6A6A | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28756E
#28756E
oklch(51.4% 0.075 186.7)
- #8C5460
#8C5460
oklch(51.3% 0.076 6.2)
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 #28756E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.018
- Deep Turquoise #017374 ΔE 0.020
- Bluegreen #017A79 ΔE 0.021
- Deep Aqua #08787F ΔE 0.026
- Teal #008080 ΔE 0.036
- Dark Aqua #05696B ΔE 0.043
- Ocean #017B92 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.061
Use #28756E 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.