#2D5B57
Closest named color: Dark Green Blue (#1F6357). oklch(43.7% 0.051 188.1), rgb(45, 91, 87).
Aa
White text reads best on this color (7.64:1).
About this color
#2D5B57 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.051 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 7.64:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #2D5B57 |
| RGB | rgb(45, 91, 87) |
| HSL | hsl(175, 34%, 27%) |
| OKLCH | oklch(43.7% 0.051 188.1) |
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 #2D5B57 | 7.64:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #2D5B57 | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #2D5B57 text on white | 7.64:1 | AAA | Lc 86.4 | Fine for body text |
| #2D5B57 text on black | 2.74:1 | Fails | Lc -15.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ACC7C4
oklch(80.9% 0.029 188.4)
-
Step 400
400
#7FABA6
oklch(70.8% 0.048 187.4)
-
Step 500
500
#5C9690
oklch(63.1% 0.062 187.4)
-
Step 600
600
#40807B
oklch(55.6% 0.066 188.8)
-
Step 700
700
#316C67
oklch(49% 0.062 188)
-
Step 800
800 (this color)
#2D5B57
oklch(43.7% 0.051 188.1)
-
Step 900
900
#274945
oklch(37.8% 0.041 186)
-
Step 950
950
#172B29
oklch(27.1% 0.026 187.7)
#2D5B57 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) | #575757 | 0.055 |
| Deuteranopia (no green cones) | #4F5158 | 0.052 |
| Tritanopia (no blue cones) | #165D5A | 0.017 |
| Achromatopsia (no color) | #535353 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5B57
#2D5B57
oklch(43.7% 0.051 188.1)
- #6B464C
#6B464C
oklch(43.8% 0.052 8.8)
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 #2D5B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.027
- Petrol #005F6A ΔE 0.034
- Deep Teal #00555A ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Aqua #05696B ΔE 0.046
- Dark Blue Green #005249 ΔE 0.048
- Pine #2B5D34 ΔE 0.058
- Dark Teal #014D4E ΔE 0.058
Use #2D5B57 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.