#2A5D5F
Closest named color: Petrol (#005F6A). oklch(44.4% 0.055 198.8), rgb(42, 93, 95).
Aa
White text reads best on this color (7.42:1).
About this color
#2A5D5F is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.055 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.024 away. White text reads best on it, at 7.42:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #2A5D5F |
| RGB | rgb(42, 93, 95) |
| HSL | hsl(182, 39%, 27%) |
| OKLCH | oklch(44.4% 0.055 198.8) |
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 #2A5D5F | 7.42:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #2A5D5F | 2.82:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #2A5D5F text on white | 7.42:1 | AAA | Lc 85.6 | Fine for body text |
| #2A5D5F text on black | 2.82:1 | Fails | Lc -16.4 | 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
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#AAC7C8
oklch(80.9% 0.031 199.1)
-
Step 400
400
#7BABAC
oklch(70.8% 0.051 197.7)
-
Step 500
500
#579698
oklch(63.2% 0.065 198.3)
-
Step 600
600
#398083
oklch(55.6% 0.071 199.1)
-
Step 700
700
#2A6C6F
oklch(49.1% 0.066 199.4)
-
Step 800
800 (this color)
#2A5D5F
oklch(44.4% 0.055 198.8)
-
Step 900
900
#23494A
oklch(37.8% 0.043 197.7)
-
Step 950
950
#162B2B
oklch(27.2% 0.027 195.7)
#2A5D5F 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) | #57595F | 0.056 |
| Deuteranopia (no green cones) | #4E535F | 0.051 |
| Tritanopia (no blue cones) | #01605D | 0.023 |
| Achromatopsia (no color) | #555555 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5D5F
#2A5D5F
oklch(44.4% 0.055 198.8)
- #6F4748
#6F4748
oklch(44.4% 0.055 17.9)
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 #2A5D5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.024
- Dark Green Blue #1F6357 ΔE 0.028
- Dark Aqua #05696B ΔE 0.038
- Deep Teal #00555A ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.045
- YInMn Blue #415A77 ΔE 0.053
- Dark Blue Green #005249 ΔE 0.056
- Slate #516572 ΔE 0.062
Use #2A5D5F 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.