#2D5857
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.9% 0.048 193.5), rgb(45, 88, 87).
Aa
White text reads best on this color (7.93:1).
About this color
#2D5857 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.048 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.028 away. White text reads best on it, at 7.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #2D5857 |
| RGB | rgb(45, 88, 87) |
| HSL | hsl(179, 32%, 26%) |
| OKLCH | oklch(42.9% 0.048 193.5) |
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 #2D5857 | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #2D5857 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #2D5857 text on white | 7.93:1 | AAA | Lc 87.4 | Fine for body text |
| #2D5857 text on black | 2.64:1 | Fails | Lc -14.7 | 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
#CEDDDC
oklch(88.6% 0.016 192)
-
Step 300
300
#ADC7C6
oklch(81% 0.028 193.8)
-
Step 400
400
#80AAA8
oklch(70.7% 0.045 192.5)
-
Step 500
500
#5F9593
oklch(63.2% 0.057 192.8)
-
Step 600
600
#437F7E
oklch(55.6% 0.063 194.1)
-
Step 700
700
#356B6A
oklch(49.1% 0.057 193.9)
-
Step 800
800 (this color)
#2D5857
oklch(42.9% 0.048 193.5)
-
Step 900
900
#284847
oklch(37.7% 0.038 193.1)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#2D5857 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) | #535457 | 0.050 |
| Deuteranopia (no green cones) | #4C4F57 | 0.047 |
| Tritanopia (no blue cones) | #175A58 | 0.017 |
| Achromatopsia (no color) | #515151 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5857
#2D5857
oklch(42.9% 0.048 193.5)
- #674548
#674548
oklch(43% 0.047 13.4)
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 #2D5857, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.028
- Deep Teal #00555A ΔE 0.031
- Petrol #005F6A ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.036
- Dark Blue Green #005249 ΔE 0.044
- Dark Teal #014D4E ΔE 0.051
- Dark Aqua #05696B ΔE 0.054
- Charcoal #264653 ΔE 0.060
Use #2D5857 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.