#28756C
Closest named color: Dark Aquamarine (#017371). oklch(51.3% 0.076 184.3), rgb(40, 117, 108).
Aa
White text reads best on this color (5.45:1).
About this color
#28756C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.076 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.019 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #28756C |
| RGB | rgb(40, 117, 108) |
| HSL | hsl(173, 49%, 31%) |
| OKLCH | oklch(51.3% 0.076 184.3) |
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 #28756C | 5.45:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #28756C | 3.85:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #28756C text on white | 5.45:1 | AA | Lc 76.9 | Fine for body text |
| #28756C text on black | 3.85:1 | AA large text | Lc -24.8 | 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
#A7C9C3
oklch(80.9% 0.037 183.5)
-
Step 400
400
#76ADA5
oklch(70.7% 0.059 184.6)
-
Step 500
500
#50988F
oklch(63% 0.074 185)
-
Step 600
600
#2F8379
oklch(55.7% 0.081 184.2)
-
Step 700
700 (this color)
#28756C
oklch(51.3% 0.076 184.3)
-
Step 800
800
#1D5A53
oklch(42.7% 0.063 184.5)
-
Step 900
900
#1F4A45
oklch(37.7% 0.049 185.3)
-
Step 950
950
#132B28
oklch(26.8% 0.031 185.1)
#28756C 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) | #6F6E6C | 0.080 |
| Deuteranopia (no green cones) | #64666D | 0.076 |
| Tritanopia (no blue cones) | #007772 | 0.015 |
| Achromatopsia (no color) | #696969 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28756C
#28756C
oklch(51.3% 0.076 184.3)
- #8C5462
#8C5462
oklch(51.4% 0.076 3.9)
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 #28756C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.019
- Deep Turquoise #017374 ΔE 0.021
- Bluegreen #017A79 ΔE 0.022
- Deep Aqua #08787F ΔE 0.029
- Teal #008080 ΔE 0.038
- Dark Aqua #05696B ΔE 0.044
- Ocean #017B92 ΔE 0.057
- Dark Green Blue #1F6357 ΔE 0.060
Use #28756C 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.