#427E77
Closest named color: Teal (#008080). oklch(55% 0.064 185.7), rgb(66, 126, 119).
Aa
White text reads best on this color (4.68:1).
About this color
#427E77 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.064 and its hue 186°. 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 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #427E77 |
| RGB | rgb(66, 126, 119) |
| HSL | hsl(173, 31%, 38%) |
| OKLCH | oklch(55% 0.064 185.7) |
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 #427E77 | 4.68:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #427E77 | 4.48:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #427E77 text on white | 4.68:1 | AA | Lc 72.4 | Content text, not long reading |
| #427E77 text on black | 4.48:1 | AA large text | Lc -29.3 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDDA
oklch(88.5% 0.017 182.7)
-
Step 300
300
#ADC7C3
oklch(80.9% 0.029 185.4)
-
Step 400
400
#80AAA5
oklch(70.6% 0.046 187.1)
-
Step 500
500
#5F958E
oklch(63% 0.058 185.5)
-
Step 600
600 (this color)
#427E77
oklch(55% 0.064 185.7)
-
Step 700
700
#356C65
oklch(49.2% 0.06 184.7)
-
Step 800
800
#2D5853
oklch(42.8% 0.049 185.8)
-
Step 900
900
#294844
oklch(37.6% 0.038 185.3)
-
Step 950
950
#182A28
oklch(26.9% 0.024 187)
#427E77 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) | #797877 | 0.069 |
| Deuteranopia (no green cones) | #6F7178 | 0.064 |
| Tritanopia (no blue cones) | #26807C | 0.020 |
| Achromatopsia (no color) | #747474 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427E77
#427E77
oklch(55% 0.064 185.7)
- #92626C
#92626C
oklch(55% 0.064 5.7)
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 #427E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.032
- Bluegreen #017A79 ΔE 0.038
- Deep Aqua #08787F ΔE 0.043
- Dark Cyan #008B8B ΔE 0.045
- Deep Turquoise #017374 ΔE 0.053
- Dark Aquamarine #017371 ΔE 0.054
- Ocean #017B92 ΔE 0.054
- Dusty Teal #4C9085 ΔE 0.055
Use #427E77 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.