#2A575D
Closest named color: Deep Teal (#00555A). oklch(42.7% 0.05 206.8), rgb(42, 87, 93).
Aa
White text reads best on this color (8.01:1).
About this color
#2A575D is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.050 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.027 away. White text reads best on it, at 8.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.61:1 |
| White text | 8.01:1 |
Values
| HEX | #2A575D |
| RGB | rgb(42, 87, 93) |
| HSL | hsl(187, 38%, 26%) |
| OKLCH | oklch(42.7% 0.05 206.8) |
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 #2A575D | 8.01:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #2A575D | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #2A575D text on white | 8.01:1 | AAA | Lc 87.6 | Fine for body text |
| #2A575D text on black | 2.61:1 | Fails | Lc -14.5 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4ECED
oklch(93.7% 0.009 205.9)
-
Step 200
200
#CDDCDE
oklch(88.4% 0.016 206.4)
-
Step 300
300
#ACC6CA
oklch(80.8% 0.029 207.8)
-
Step 400
400
#7EA9AF
oklch(70.6% 0.047 206.8)
-
Step 500
500
#5C949C
oklch(63.1% 0.06 207.3)
-
Step 600
600
#407E87
oklch(55.5% 0.065 207.8)
-
Step 700
700
#316B72
oklch(49.2% 0.061 205.9)
-
Step 800
800 (this color)
#2A575D
oklch(42.7% 0.05 206.8)
-
Step 900
900
#27484C
oklch(37.8% 0.039 205.6)
-
Step 950
950
#172A2D
oklch(27% 0.025 208.4)
#2A575D 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) | #51545D | 0.050 |
| Deuteranopia (no green cones) | #484E5D | 0.044 |
| Tritanopia (no blue cones) | #075A59 | 0.025 |
| Achromatopsia (no color) | #505050 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A575D
#2A575D
oklch(42.7% 0.05 206.8)
- #684440
#684440
oklch(42.6% 0.051 26.4)
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 #2A575D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.029
- Petrol #005F6A ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.044
- Dark Blue Green #005249 ΔE 0.047
- Dark Teal #014D4E ΔE 0.050
- YInMn Blue #415A77 ΔE 0.053
- Charcoal #264653 ΔE 0.055
Use #2A575D 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.