#285C5B
Closest named color: Dark Green Blue (#1F6357). oklch(43.9% 0.055 193.6), rgb(40, 92, 91).
Aa
White text reads best on this color (7.57:1).
About this color
#285C5B is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.055 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.026 away. White text reads best on it, at 7.57:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #285C5B |
| RGB | rgb(40, 92, 91) |
| HSL | hsl(179, 39%, 26%) |
| OKLCH | oklch(43.9% 0.055 193.6) |
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 #285C5B | 7.57:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #285C5B | 2.77:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #285C5B text on white | 7.57:1 | AAA | Lc 86.2 | Fine for body text |
| #285C5B text on black | 2.77:1 | Fails | Lc -15.9 | 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
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#AAC8C6
oklch(81% 0.032 191.6)
-
Step 400
400
#7BABAA
oklch(70.7% 0.051 194.4)
-
Step 500
500
#569695
oklch(63% 0.066 194.3)
-
Step 600
600
#38817F
oklch(55.7% 0.072 192.8)
-
Step 700
700
#2A6D6B
oklch(49.2% 0.067 192.5)
-
Step 800
800 (this color)
#285C5B
oklch(43.9% 0.055 193.6)
-
Step 900
900
#234948
oklch(37.7% 0.043 193.2)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#285C5B 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) | #57585B | 0.059 |
| Deuteranopia (no green cones) | #4E515B | 0.055 |
| Tritanopia (no blue cones) | #005F5C | 0.020 |
| Achromatopsia (no color) | #545454 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285C5B
#285C5B
oklch(43.9% 0.055 193.6)
- #6E4649
#6E4649
oklch(44.1% 0.055 14.7)
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 #285C5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.026
- Petrol #005F6A ΔE 0.027
- Deep Teal #00555A ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.040
- Dark Aqua #05696B ΔE 0.041
- Dark Blue Green #005249 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.059
- Dark Teal #014D4E ΔE 0.059
Use #285C5B 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.