#2B574B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.1% 0.053 173.8), rgb(43, 87, 75).
Aa
White text reads best on this color (8.17:1).
About this color
#2B574B is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.053 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.029 away. White text reads best on it, at 8.17:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #2B574B |
| RGB | rgb(43, 87, 75) |
| HSL | hsl(164, 34%, 25%) |
| OKLCH | oklch(42.1% 0.053 173.8) |
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 #2B574B | 8.17:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2B574B | 2.56:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #2B574B text on white | 8.17:1 | AAA | Lc 88.2 | Fine for body text |
| #2B574B text on black | 2.56:1 | Fails | Lc -14.0 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ADC8BF
oklch(81% 0.032 173.4)
-
Step 400
400
#81AB9E
oklch(70.7% 0.049 173.8)
-
Step 500
500
#5F9686
oklch(63% 0.063 173.8)
-
Step 600
600
#448170
oklch(55.7% 0.069 173.5)
-
Step 700
700
#356D5E
oklch(49.2% 0.065 173.9)
-
Step 800
800 (this color)
#2B574B
oklch(42.1% 0.053 173.8)
-
Step 900
900
#294940
oklch(37.8% 0.041 174.1)
-
Step 950
950
#182B25
oklch(27% 0.027 172.2)
#2B574B 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) | #54524A | 0.055 |
| Deuteranopia (no green cones) | #4D4D4C | 0.053 |
| Tritanopia (no blue cones) | #1A5853 | 0.017 |
| Achromatopsia (no color) | #4F4F4F | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B574B
#2B574B
oklch(42.1% 0.053 173.8)
- #65414F
#65414F
oklch(42.1% 0.054 354.7)
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 #2B574B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Blue Green #005249 ΔE 0.034
- Deep Teal #00555A ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.037
- Pine #2B5D34 ΔE 0.046
- Dark Teal #014D4E ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Spruce #0A5F38 ΔE 0.051
Use #2B574B 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.