#28564E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.053 180.9), rgb(40, 86, 78).
Aa
White text reads best on this color (8.29:1).
About this color
#28564E is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.053 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.024 away. White text reads best on it, at 8.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #28564E |
| RGB | rgb(40, 86, 78) |
| HSL | hsl(170, 37%, 25%) |
| OKLCH | oklch(41.8% 0.053 180.9) |
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 #28564E | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #28564E | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #28564E text on white | 8.29:1 | AAA | Lc 88.5 | Fine for body text |
| #28564E text on black | 2.53:1 | Fails | Lc -13.7 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDDA
oklch(88.5% 0.017 182.7)
-
Step 300
300
#ACC7C1
oklch(80.8% 0.03 180.6)
-
Step 400
400
#7FABA2
oklch(70.7% 0.049 180.8)
-
Step 500
500
#5D968B
oklch(63% 0.063 180.6)
-
Step 600
600
#418175
oklch(55.7% 0.069 179.9)
-
Step 700
700
#326D63
oklch(49.2% 0.064 181)
-
Step 800
800 (this color)
#28564E
oklch(41.8% 0.053 180.9)
-
Step 900
900
#274943
oklch(37.7% 0.041 181.4)
-
Step 950
950
#182B27
oklch(27.1% 0.026 179.4)
#28564E 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) | #53514E | 0.057 |
| Deuteranopia (no green cones) | #4B4C4F | 0.053 |
| Tritanopia (no blue cones) | #125754 | 0.016 |
| Achromatopsia (no color) | #4E4E4E | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28564E
#28564E
oklch(41.8% 0.053 180.9)
- #65404B
#65404B
oklch(41.8% 0.054 0.4)
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 #28564E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.024
- Deep Teal #00555A ΔE 0.029
- Dark Blue Green #005249 ΔE 0.030
- Dark Green Blue #1F6357 ΔE 0.040
- Dark Teal #014D4E ΔE 0.042
- Petrol #005F6A ΔE 0.047
- Pine #2B5D34 ΔE 0.053
- Spruce #0A5F38 ΔE 0.057
Use #28564E 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.