#28554C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.5% 0.052 178.9), rgb(40, 85, 76).
Aa
White text reads best on this color (8.42:1).
About this color
#28554C is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.052 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.023 away. White text reads best on it, at 8.42:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #28554C |
| RGB | rgb(40, 85, 76) |
| HSL | hsl(168, 36%, 25%) |
| OKLCH | oklch(41.5% 0.052 178.9) |
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 #28554C | 8.42:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #28554C | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #28554C text on white | 8.42:1 | AAA | Lc 88.9 | Fine for body text |
| #28554C text on black | 2.49:1 | Fails | Lc -13.3 | 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
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ACC7C1
oklch(80.8% 0.03 180.6)
-
Step 400
400
#80ABA1
oklch(70.7% 0.049 178.9)
-
Step 500
500
#5E968A
oklch(63.1% 0.062 179.1)
-
Step 600
600
#428174
oklch(55.7% 0.069 178.6)
-
Step 700
700
#336D61
oklch(49.2% 0.064 178.2)
-
Step 800
800 (this color)
#28554C
oklch(41.5% 0.052 178.9)
-
Step 900
900
#284942
oklch(37.8% 0.041 178.8)
-
Step 950
950
#182B27
oklch(27.1% 0.026 179.4)
#28554C 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) | #52504C | 0.056 |
| Deuteranopia (no green cones) | #4B4B4D | 0.053 |
| Tritanopia (no blue cones) | #135652 | 0.016 |
| Achromatopsia (no color) | #4D4D4D | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28554C
#28554C
oklch(41.5% 0.052 178.9)
- #63404B
#63404B
oklch(41.5% 0.051 359.1)
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 #28554C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.023
- Dark Blue Green #005249 ΔE 0.028
- Deep Teal #00555A ΔE 0.030
- Dark Teal #014D4E ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.043
- Petrol #005F6A ΔE 0.050
- Pine #2B5D34 ΔE 0.052
- Charcoal #264653 ΔE 0.056
Use #28554C 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.