#427B71
Closest named color: Teal (#008080). oklch(54.1% 0.063 181.2), rgb(66, 123, 113).
Aa
White text reads best on this color (4.87:1).
About this color
#427B71 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.063 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.035 away. White text reads best on it, at 4.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #427B71 |
| RGB | rgb(66, 123, 113) |
| HSL | hsl(169, 30%, 37%) |
| OKLCH | oklch(54.1% 0.063 181.2) |
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 #427B71 | 4.87:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #427B71 | 4.30:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #427B71 text on white | 4.87:1 | AA | Lc 73.7 | Content text, not long reading |
| #427B71 text on black | 4.30:1 | AA large text | Lc -28.0 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CFDDDA
oklch(88.6% 0.016 181.7)
-
Step 300
300
#AEC7C2
oklch(80.9% 0.028 182.2)
-
Step 400
400
#82AAA2
oklch(70.6% 0.045 181.3)
-
Step 500
500
#61958B
oklch(63% 0.058 180.9)
-
Step 600
600 (this color)
#427B71
oklch(54.1% 0.063 181.2)
-
Step 700
700
#386C63
oklch(49.2% 0.058 181.3)
-
Step 800
800
#2F5850
oklch(42.8% 0.048 179.8)
-
Step 900
900
#2A4843
oklch(37.6% 0.037 182.5)
-
Step 950
950
#192A27
oklch(26.9% 0.023 182.2)
#427B71 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) | #777571 | 0.067 |
| Deuteranopia (no green cones) | #6D6E72 | 0.063 |
| Tritanopia (no blue cones) | #2B7D78 | 0.019 |
| Achromatopsia (no color) | #717171 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427B71
#427B71
oklch(54.1% 0.063 181.2)
- #8E606C
#8E606C
oklch(54.2% 0.062 2.3)
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 #427B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.035
- Bluegreen #017A79 ΔE 0.036
- Deep Aqua #08787F ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.047
- Deep Turquoise #017374 ΔE 0.048
- Dark Cyan #008B8B ΔE 0.054
- Ocean #017B92 ΔE 0.058
- Battleship Gray #6C757D ΔE 0.060
Use #427B71 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.