#285A5A
Closest named color: Petrol (#005F6A). oklch(43.3% 0.054 195.4), rgb(40, 90, 90).
Aa
White text reads best on this color (7.77:1).
About this color
#285A5A is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.054 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.029 away. White text reads best on it, at 7.77:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #285A5A |
| RGB | rgb(40, 90, 90) |
| HSL | hsl(180, 38%, 25%) |
| OKLCH | oklch(43.3% 0.054 195.4) |
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 #285A5A | 7.77:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #285A5A | 2.70:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #285A5A text on white | 7.77:1 | AAA | Lc 86.8 | Fine for body text |
| #285A5A text on black | 2.70:1 | Fails | Lc -15.2 | 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
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#AAC7C7
oklch(80.8% 0.031 196.6)
-
Step 400
400
#7CABAA
oklch(70.7% 0.05 194.4)
-
Step 500
500
#589696
oklch(63.1% 0.064 195.6)
-
Step 600
600
#3B8080
oklch(55.6% 0.069 195.3)
-
Step 700
700
#2C6C6C
oklch(49% 0.065 195.2)
-
Step 800
800 (this color)
#285A5A
oklch(43.3% 0.054 195.4)
-
Step 900
900
#244949
oklch(37.8% 0.042 195.5)
-
Step 950
950
#162B2A
oklch(27.1% 0.027 191.8)
#285A5A 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) | #55565A | 0.057 |
| Deuteranopia (no green cones) | #4C505A | 0.051 |
| Tritanopia (no blue cones) | #025D5A | 0.021 |
| Achromatopsia (no color) | #525252 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285A5A
#285A5A
oklch(43.3% 0.054 195.4)
- #6B4447
#6B4447
oklch(43.2% 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 #285A5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.029
- Deep Teal #00555A ΔE 0.030
- Dark Green Blue #1F6357 ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.034
- Dark Blue Green #005249 ΔE 0.045
- Dark Aqua #05696B ΔE 0.047
- Dark Teal #014D4E ΔE 0.053
- YInMn Blue #415A77 ΔE 0.059
Use #285A5A 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.