#28515F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.1% 0.051 222.6), rgb(40, 81, 95).
Aa
White text reads best on this color (8.63:1).
About this color
#28515F is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.051 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.63:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #28515F |
| RGB | rgb(40, 81, 95) |
| HSL | hsl(195, 41%, 26%) |
| OKLCH | oklch(41.1% 0.051 222.6) |
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 #28515F | 8.63:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #28515F | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #28515F text on white | 8.63:1 | AAA | Lc 89.5 | Fine for body text |
| #28515F text on black | 2.43:1 | Fails | Lc -12.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE1
oklch(88.5% 0.017 221.1)
-
Step 300
300
#ADC5CF
oklch(80.9% 0.03 224.8)
-
Step 400
400
#80A8B7
oklch(70.8% 0.049 222.9)
-
Step 500
500
#5F92A5
oklch(63.1% 0.061 223.5)
-
Step 600
600
#437C90
oklch(55.5% 0.067 223)
-
Step 700
700
#35697A
oklch(49.2% 0.062 221.7)
-
Step 800
800 (this color)
#28515F
oklch(41.1% 0.051 222.6)
-
Step 900
900
#284651
oklch(37.5% 0.04 223.5)
-
Step 950
950
#18292F
oklch(26.9% 0.025 222.2)
#28515F 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) | #494F60 | 0.042 |
| Deuteranopia (no green cones) | #41495F | 0.038 |
| Tritanopia (no blue cones) | #005555 | 0.034 |
| Achromatopsia (no color) | #4C4C4C | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28515F
#28515F
oklch(41.1% 0.051 222.6)
- #634134
#634134
oklch(41.1% 0.052 41.7)
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 #28515F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Deep Teal #00555A ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.035
- Charcoal #264653 ΔE 0.037
- Dark Teal #014D4E ΔE 0.042
- Petrol #005F6A ΔE 0.044
- Dark Blue Green #005249 ΔE 0.049
- YInMn Blue #415A77 ΔE 0.056
Use #28515F 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.