#28564A
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.7% 0.055 174.3), rgb(40, 86, 74).
Aa
White text reads best on this color (8.33:1).
About this color
#28564A is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.055 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.028 away. White text reads best on it, at 8.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.52:1 |
| White text | 8.33:1 |
Values
| HEX | #28564A |
| RGB | rgb(40, 86, 74) |
| HSL | hsl(164, 37%, 25%) |
| OKLCH | oklch(41.7% 0.055 174.3) |
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 #28564A | 8.33:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #28564A | 2.52:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #28564A text on white | 8.33:1 | AAA | Lc 88.6 | Fine for body text |
| #28564A text on black | 2.52:1 | Fails | Lc -13.6 | 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
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#7FAB9E
oklch(70.6% 0.051 174.6)
-
Step 500
500
#5D9787
oklch(63.2% 0.066 174.6)
-
Step 600
600
#418170
oklch(55.5% 0.072 174.1)
-
Step 700
700
#336D5E
oklch(49.1% 0.066 174.3)
-
Step 800
800 (this color)
#28564A
oklch(41.7% 0.055 174.3)
-
Step 900
900
#284940
oklch(37.7% 0.042 174.5)
-
Step 950
950
#182B25
oklch(27% 0.027 172.2)
#28564A 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) | #535149 | 0.057 |
| Deuteranopia (no green cones) | #4C4C4B | 0.054 |
| Tritanopia (no blue cones) | #155752 | 0.017 |
| Achromatopsia (no color) | #4E4E4E | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28564A
#28564A
oklch(41.7% 0.055 174.3)
- #643F4E
#643F4E
oklch(41.6% 0.056 353.9)
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 #28564A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Blue Green #005249 ΔE 0.029
- Deep Teal #00555A ΔE 0.034
- Dark Green Blue #1F6357 ΔE 0.040
- Dark Teal #014D4E ΔE 0.043
- Pine #2B5D34 ΔE 0.047
- Spruce #0A5F38 ΔE 0.051
- Petrol #005F6A ΔE 0.052
Use #28564A 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.