#285F59
Closest named color: Dark Green Blue (#1F6357). oklch(44.7% 0.059 185.7), rgb(40, 95, 89).
Aa
White text reads best on this color (7.31:1).
About this color
#285F59 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.059 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.015 away. White text reads best on it, at 7.31:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #285F59 |
| RGB | rgb(40, 95, 89) |
| HSL | hsl(173, 41%, 26%) |
| OKLCH | oklch(44.7% 0.059 185.7) |
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 #285F59 | 7.31:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #285F59 | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #285F59 text on white | 7.31:1 | AAA | Lc 85.2 | Fine for body text |
| #285F59 text on black | 2.87:1 | Fails | Lc -16.8 | 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
#CCDDDB
oklch(88.4% 0.018 188.3)
-
Step 300
300
#A9C8C4
oklch(80.9% 0.034 187)
-
Step 400
400
#79ACA5
oklch(70.6% 0.055 185.4)
-
Step 500
500
#54988F
oklch(63.2% 0.071 184.6)
-
Step 600
600
#35827A
oklch(55.7% 0.076 185.9)
-
Step 700
700
#266E66
oklch(49.1% 0.072 184.9)
-
Step 800
800 (this color)
#285F59
oklch(44.7% 0.059 185.7)
-
Step 900
900
#224A45
oklch(37.8% 0.046 184.8)
-
Step 950
950
#152B28
oklch(27% 0.029 184.5)
#285F59 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) | #5A5A59 | 0.062 |
| Deuteranopia (no green cones) | #52545A | 0.059 |
| Tritanopia (no blue cones) | #00615D | 0.019 |
| Achromatopsia (no color) | #565656 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285F59
#285F59
oklch(44.7% 0.059 185.7)
- #70464F
#70464F
oklch(44.5% 0.059 5.8)
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 #285F59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.015
- Petrol #005F6A ΔE 0.032
- Dark Aqua #05696B ΔE 0.036
- Deep Teal #00555A ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Blue Green #005249 ΔE 0.054
- Pine #2B5D34 ΔE 0.056
- Spruce #0A5F38 ΔE 0.058
Use #285F59 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.