#2A5E71
Closest named color: Petrol (#005F6A). oklch(45.5% 0.063 224.8), rgb(42, 94, 113).
Aa
White text reads best on this color (7.14:1).
About this color
#2A5E71 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.063 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.026 away. White text reads best on it, at 7.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.93:1 |
| White text | 7.14:1 |
Values
| HEX | #2A5E71 |
| RGB | rgb(42, 94, 113) |
| HSL | hsl(196, 46%, 30%) |
| OKLCH | oklch(45.5% 0.063 224.8) |
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 #2A5E71 | 7.14:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #2A5E71 | 2.93:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #2A5E71 text on white | 7.14:1 | AAA | Lc 84.6 | Fine for body text |
| #2A5E71 text on black | 2.93:1 | Fails | Lc -17.4 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A8C6D3
oklch(80.9% 0.037 225.9)
-
Step 400
400
#78A9BC
oklch(70.7% 0.059 224)
-
Step 500
500
#5393AC
oklch(63% 0.076 225.4)
-
Step 600
600
#347D97
oklch(55.5% 0.082 224.8)
-
Step 700
700
#266A81
oklch(49.2% 0.076 224.1)
-
Step 800
800 (this color)
#2A5E71
oklch(45.5% 0.063 224.8)
-
Step 900
900
#214755
oklch(37.6% 0.049 224.6)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#2A5E71 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) | #535C72 | 0.048 |
| Deuteranopia (no green cones) | #495471 | 0.044 |
| Tritanopia (no blue cones) | #006464 | 0.039 |
| Achromatopsia (no color) | #585858 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A5E71
#2A5E71
oklch(45.5% 0.063 224.8)
- #744B39
#744B39
oklch(45.5% 0.063 44.4)
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 #2A5E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.026
- YInMn Blue #415A77 ΔE 0.030
- Dark Aqua #05696B ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim #3B638C ΔE 0.049
- Slate #516572 ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.052
- Deep Teal #00555A ΔE 0.053
Use #2A5E71 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.