#427F80
Closest named color: Teal (#008080). oklch(55.6% 0.063 196.9), rgb(66, 127, 128).
Aa
White text reads best on this color (4.58:1).
About this color
#427F80 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.063 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.032 away. White text reads best on it, at 4.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.57:1 |
| White text | 4.58:1 |
Values
| HEX | #427F80 |
| RGB | rgb(66, 127, 128) |
| HSL | hsl(181, 32%, 38%) |
| OKLCH | oklch(55.6% 0.063 196.9) |
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 #427F80 | 4.58:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #427F80 | 4.57:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #427F80 text on white | 4.58:1 | AA | Lc 71.7 | Content text, not long reading |
| #427F80 text on black | 4.57:1 | AA | Lc -30.0 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDDDD
oklch(88.6% 0.016 196.9)
-
Step 300
300
#ACC7C7
oklch(81% 0.029 196.6)
-
Step 400
400
#7FAAAA
oklch(70.7% 0.046 196.2)
-
Step 500
500
#5E9595
oklch(63.2% 0.058 195.8)
-
Step 600
600 (this color)
#427F80
oklch(55.6% 0.063 196.9)
-
Step 700
700
#336B6C
oklch(49.1% 0.059 197)
-
Step 800
800
#2B5758
oklch(42.6% 0.049 197.4)
-
Step 900
900
#284848
oklch(37.7% 0.038 195.7)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#427F80 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) | #787A80 | 0.066 |
| Deuteranopia (no green cones) | #6D7280 | 0.061 |
| Tritanopia (no blue cones) | #1F837F | 0.025 |
| Achromatopsia (no color) | #757575 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427F80
#427F80
oklch(55.6% 0.063 196.9)
- #956466
#956466
oklch(55.6% 0.064 16.6)
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 #427F80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.032
- Dark Cyan #008B8B ΔE 0.041
- Bluegreen #017A79 ΔE 0.041
- Deep Aqua #08787F ΔE 0.042
- Ocean #017B92 ΔE 0.046
- Grey Blue #647D8E ΔE 0.047
- Battleship Grey #6B7C85 ΔE 0.049
- Metallic Blue #4F738E ΔE 0.050
Use #427F80 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.