#427E88
Closest named color: Teal (#008080). oklch(55.7% 0.064 209.5), rgb(66, 126, 136).
Aa
White text reads best on this color (4.59:1).
About this color
#427E88 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.064 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.037 away. White text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #427E88 |
| RGB | rgb(66, 126, 136) |
| HSL | hsl(189, 35%, 40%) |
| OKLCH | oklch(55.7% 0.064 209.5) |
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 #427E88 | 4.59:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #427E88 | 4.57:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #427E88 text on white | 4.59:1 | AA | Lc 71.8 | Content text, not long reading |
| #427E88 text on black | 4.57:1 | AA | Lc -29.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDF
oklch(88.5% 0.016 212)
-
Step 300
300
#ACC6CB
oklch(80.9% 0.029 210.5)
-
Step 400
400
#7FA9B0
oklch(70.7% 0.046 208.8)
-
Step 500
500
#5D949D
oklch(63.2% 0.06 208.9)
-
Step 600
600 (this color)
#427E88
oklch(55.7% 0.064 209.5)
-
Step 700
700
#336A73
oklch(49.1% 0.06 209.4)
-
Step 800
800
#2B575E
oklch(42.8% 0.05 208.9)
-
Step 900
900
#28474D
oklch(37.6% 0.038 211.3)
-
Step 950
950
#182A2D
oklch(27.1% 0.024 209.1)
#427E88 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) | #757A89 | 0.062 |
| Deuteranopia (no green cones) | #6A7288 | 0.056 |
| Tritanopia (no blue cones) | #178381 | 0.034 |
| Achromatopsia (no color) | #757575 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427E88
#427E88
oklch(55.7% 0.064 209.5)
- #96655D
#96655D
oklch(55.6% 0.065 29.5)
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 #427E88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.037
- Cerulean #457B9D ΔE 0.038
- Ocean #017B92 ΔE 0.038
- Metallic Blue #4F738E ΔE 0.039
- Stormy Blue #507B9C ΔE 0.039
- Grey Blue #647D8E ΔE 0.040
- Deep Aqua #08787F ΔE 0.043
- Teal Blue #01889F ΔE 0.044
Use #427E88 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.