#285B5B
Closest named color: Petrol (#005F6A). oklch(43.7% 0.055 195.3), rgb(40, 91, 91).
Aa
White text reads best on this color (7.67:1).
About this color
#285B5B is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.055 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.028 away. White text reads best on it, at 7.67:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #285B5B |
| RGB | rgb(40, 91, 91) |
| HSL | hsl(180, 39%, 26%) |
| OKLCH | oklch(43.7% 0.055 195.3) |
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 #285B5B | 7.67:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #285B5B | 2.73:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #285B5B text on white | 7.67:1 | AAA | Lc 86.5 | Fine for body text |
| #285B5B text on black | 2.73:1 | Fails | Lc -15.6 | Dividers and decoration only |
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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#AAC7C7
oklch(80.8% 0.031 196.6)
-
Step 400
400
#7BABAB
oklch(70.7% 0.051 196.1)
-
Step 500
500
#579696
oklch(63.1% 0.065 195.6)
-
Step 600
600
#398080
oklch(55.5% 0.071 195.3)
-
Step 700
700
#2B6C6C
oklch(49% 0.065 195.2)
-
Step 800
800 (this color)
#285B5B
oklch(43.7% 0.055 195.3)
-
Step 900
900
#244949
oklch(37.8% 0.042 195.5)
-
Step 950
950
#162B2B
oklch(27.2% 0.027 195.7)
#285B5B 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) | #55575B | 0.056 |
| Deuteranopia (no green cones) | #4D515B | 0.052 |
| Tritanopia (no blue cones) | #005E5B | 0.021 |
| Achromatopsia (no color) | #535353 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285B5B
#285B5B
oklch(43.7% 0.055 195.3)
- #6C4548
#6C4548
oklch(43.6% 0.054 14.5)
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 #285B5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.028
- Dark Green Blue #1F6357 ΔE 0.029
- Deep Teal #00555A ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Aqua #05696B ΔE 0.044
- Dark Blue Green #005249 ΔE 0.048
- Dark Teal #014D4E ΔE 0.056
- YInMn Blue #415A77 ΔE 0.058
Use #285B5B 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.