#28575F
Closest named color: Deep Teal (#00555A). oklch(42.7% 0.053 210), rgb(40, 87, 95).
Aa
White text reads best on this color (8.01:1).
About this color
#28575F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.053 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.026 away. White text reads best on it, at 8.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.61:1 |
| White text | 8.01:1 |
Values
| HEX | #28575F |
| RGB | rgb(40, 87, 95) |
| HSL | hsl(189, 41%, 26%) |
| OKLCH | oklch(42.7% 0.053 210) |
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 #28575F | 8.01:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #28575F | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #28575F text on white | 8.01:1 | AAA | Lc 87.6 | Fine for body text |
| #28575F text on black | 2.61:1 | Fails | Lc -14.5 | Not readable |
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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDCDF
oklch(88.4% 0.017 211)
-
Step 300
300
#ABC6CC
oklch(80.8% 0.03 212.6)
-
Step 400
400
#7DA9B2
oklch(70.6% 0.049 211.6)
-
Step 500
500
#5A949F
oklch(63.1% 0.063 211)
-
Step 600
600
#3D7E89
oklch(55.5% 0.068 209.9)
-
Step 700
700
#2F6B75
oklch(49.2% 0.064 209.9)
-
Step 800
800 (this color)
#28575F
oklch(42.7% 0.053 210)
-
Step 900
900
#25484E
oklch(37.8% 0.042 209.8)
-
Step 950
950
#172A2D
oklch(27% 0.025 208.4)
#28575F 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) | #505460 | 0.050 |
| Deuteranopia (no green cones) | #474E5F | 0.045 |
| Tritanopia (no blue cones) | #005B59 | 0.028 |
| Achromatopsia (no color) | #505050 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28575F
#28575F
oklch(42.7% 0.053 210)
- #69443E
#69443E
oklch(42.7% 0.053 29.5)
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 #28575F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.026
- Petrol #005F6A ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.045
- Dark Blue Green #005249 ΔE 0.048
- Dark Teal #014D4E ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.054
Use #28575F 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.