#2D5F59
Closest named color: Dark Green Blue (#1F6357). oklch(44.9% 0.055 185.2), rgb(45, 95, 89).
Aa
White text reads best on this color (7.25:1).
About this color
#2D5F59 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.055 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.017 away. White text reads best on it, at 7.25:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #2D5F59 |
| RGB | rgb(45, 95, 89) |
| HSL | hsl(173, 36%, 27%) |
| OKLCH | oklch(44.9% 0.055 185.2) |
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 #2D5F59 | 7.25:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #2D5F59 | 2.89:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #2D5F59 text on white | 7.25:1 | AAA | Lc 85.1 | Fine for body text |
| #2D5F59 text on black | 2.89:1 | Fails | Lc -16.9 | 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
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#AAC8C3
oklch(80.9% 0.033 184.4)
-
Step 400
400
#7CABA5
oklch(70.6% 0.051 186.3)
-
Step 500
500
#58978F
oklch(63.2% 0.066 185.3)
-
Step 600
600
#3B8179
oklch(55.6% 0.072 185.4)
-
Step 700
700
#2D6D66
oklch(49.1% 0.066 185.6)
-
Step 800
800 (this color)
#2D5F59
oklch(44.9% 0.055 185.2)
-
Step 900
900
#254945
oklch(37.7% 0.042 186.3)
-
Step 950
950
#162B28
oklch(27% 0.028 184.2)
#2D5F59 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) | #5B5A59 | 0.059 |
| Deuteranopia (no green cones) | #52545A | 0.055 |
| Tritanopia (no blue cones) | #13615D | 0.017 |
| Achromatopsia (no color) | #575757 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5F59
#2D5F59
oklch(44.9% 0.055 185.2)
- #6F4851
#6F4851
oklch(44.9% 0.055 4.4)
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 #2D5F59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.017
- Petrol #005F6A ΔE 0.034
- Dark Aqua #05696B ΔE 0.037
- Deep Teal #00555A ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.050
- Pine #2B5D34 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.057
- Spruce #0A5F38 ΔE 0.061
Use #2D5F59 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.