#2B574D
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.2% 0.052 177.1), rgb(43, 87, 77).
Aa
White text reads best on this color (8.16:1).
About this color
#2B574D is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.052 and its hue 177°. 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 8.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.57:1 |
| White text | 8.16:1 |
Values
| HEX | #2B574D |
| RGB | rgb(43, 87, 77) |
| HSL | hsl(166, 34%, 25%) |
| OKLCH | oklch(42.2% 0.052 177.1) |
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 #2B574D | 8.16:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2B574D | 2.57:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #2B574D text on white | 8.16:1 | AAA | Lc 88.1 | Fine for body text |
| #2B574D text on black | 2.57:1 | Fails | Lc -14.1 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ADC7C0
oklch(80.8% 0.03 177.5)
-
Step 400
400
#80ABA0
oklch(70.7% 0.049 177.3)
-
Step 500
500
#5F9689
oklch(63.1% 0.062 177.6)
-
Step 600
600
#438073
oklch(55.5% 0.067 178.2)
-
Step 700
700
#356C60
oklch(49% 0.062 177.6)
-
Step 800
800 (this color)
#2B574D
oklch(42.2% 0.052 177.1)
-
Step 900
900
#294941
oklch(37.8% 0.041 176.2)
-
Step 950
950
#182B26
oklch(27.1% 0.027 175.7)
#2B574D 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) | #54524D | 0.055 |
| Deuteranopia (no green cones) | #4D4D4E | 0.053 |
| Tritanopia (no blue cones) | #195854 | 0.016 |
| Achromatopsia (no color) | #4F4F4F | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B574D
#2B574D
oklch(42.2% 0.052 177.1)
- #65424E
#65424E
oklch(42.3% 0.051 357.3)
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 #2B574D, 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 0.034
- Dark Blue Green #005249 ΔE 0.034
- Dark Green Blue #1F6357 ΔE 0.037
- Dark Teal #014D4E ΔE 0.047
- Petrol #005F6A ΔE 0.048
- Pine #2B5D34 ΔE 0.049
- Spruce #0A5F38 ΔE 0.054
Use #2B574D 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.