#285B5E
Closest named color: Petrol (#005F6A). oklch(43.8% 0.055 200.5), rgb(40, 91, 94).
Aa
White text reads best on this color (7.64:1).
About this color
#285B5E is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.055 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.025 away. White text reads best on it, at 7.64:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #285B5E |
| RGB | rgb(40, 91, 94) |
| HSL | hsl(183, 40%, 26%) |
| OKLCH | oklch(43.8% 0.055 200.5) |
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 #285B5E | 7.64:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #285B5E | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #285B5E text on white | 7.64:1 | AAA | Lc 86.4 | Fine for body text |
| #285B5E text on black | 2.74:1 | Fails | Lc -15.7 | 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
#CCDDDE
oklch(88.5% 0.018 201.1)
-
Step 300
300
#AAC7C9
oklch(80.9% 0.031 201.7)
-
Step 400
400
#7BABAD
oklch(70.8% 0.051 199.3)
-
Step 500
500
#579699
oklch(63.2% 0.065 199.6)
-
Step 600
600
#398084
oklch(55.6% 0.071 200.3)
-
Step 700
700
#2A6C70
oklch(49.1% 0.066 200.8)
-
Step 800
800 (this color)
#285B5E
oklch(43.8% 0.055 200.5)
-
Step 900
900
#23484B
oklch(37.6% 0.043 202.4)
-
Step 950
950
#162A2C
oklch(26.9% 0.026 203.9)
#285B5E 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) | #55575E | 0.056 |
| Deuteranopia (no green cones) | #4C515E | 0.051 |
| Tritanopia (no blue cones) | #005E5C | 0.022 |
| Achromatopsia (no color) | #535353 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285B5E
#285B5E
oklch(43.8% 0.055 200.5)
- #6D4645
#6D4645
oklch(43.8% 0.054 21.1)
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 #285B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.025
- Dark Green Blue #1F6357 ΔE 0.032
- Deep Teal #00555A ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Aqua #05696B ΔE 0.043
- Dark Blue Green #005249 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.054
- Dark Teal #014D4E ΔE 0.058
Use #285B5E 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.