#285755
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.3% 0.051 191.7), rgb(40, 87, 85).
Aa
White text reads best on this color (8.12:1).
About this color
#285755 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.051 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.025 away. White text reads best on it, at 8.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #285755 |
| RGB | rgb(40, 87, 85) |
| HSL | hsl(177, 37%, 25%) |
| OKLCH | oklch(42.3% 0.051 191.7) |
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 #285755 | 8.12:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #285755 | 2.58:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #285755 text on white | 8.12:1 | AAA | Lc 88.0 | Fine for body text |
| #285755 text on black | 2.58:1 | Fails | Lc -14.2 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C5
oklch(80.8% 0.03 191.3)
-
Step 400
400
#7EABA8
oklch(70.8% 0.048 191)
-
Step 500
500
#5B9693
oklch(63.2% 0.062 191.6)
-
Step 600
600
#3F807D
oklch(55.6% 0.067 191.4)
-
Step 700
700
#306C6A
oklch(49.1% 0.062 192.4)
-
Step 800
800 (this color)
#285755
oklch(42.3% 0.051 191.7)
-
Step 900
900
#264847
oklch(37.6% 0.04 193.1)
-
Step 950
950
#172A29
oklch(26.8% 0.025 191.5)
#285755 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) | #525355 | 0.054 |
| Deuteranopia (no green cones) | #4A4D55 | 0.050 |
| Tritanopia (no blue cones) | #0A5956 | 0.018 |
| Achromatopsia (no color) | #505050 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285755
#285755
oklch(42.3% 0.051 191.7)
- #674247
#674247
oklch(42.3% 0.052 10.7)
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 #285755, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.025
- Deep Teal #00555A ΔE 0.025
- Dark Blue Green #005249 ΔE 0.037
- Petrol #005F6A ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Teal #014D4E ΔE 0.044
- Charcoal #264653 ΔE 0.056
- Dark Aqua #05696B ΔE 0.057
Use #285755 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.