#427A7B
Closest named color: Teal (#008080). oklch(54.2% 0.059 197.1), rgb(66, 122, 123).
Aa
White text reads best on this color (4.88:1).
About this color
#427A7B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.059 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.034 away. White text reads best on it, at 4.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #427A7B |
| RGB | rgb(66, 122, 123) |
| HSL | hsl(181, 30%, 37%) |
| OKLCH | oklch(54.2% 0.059 197.1) |
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 #427A7B | 4.88:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #427A7B | 4.30:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #427A7B text on white | 4.88:1 | AA | Lc 73.7 | Content text, not long reading |
| #427A7B 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4EBEB
oklch(93.5% 0.007 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AEC6C6
oklch(80.9% 0.026 196.6)
-
Step 400
400
#82A9AA
oklch(70.7% 0.042 198.2)
-
Step 500
500
#619495
oklch(63.1% 0.054 197.4)
-
Step 600
600 (this color)
#427A7B
oklch(54.2% 0.059 197.1)
-
Step 700
700
#376A6B
oklch(48.9% 0.055 197.2)
-
Step 800
800
#2E5758
oklch(42.7% 0.046 197.6)
-
Step 900
900
#2A4848
oklch(37.8% 0.036 195.7)
-
Step 950
950
#192A2A
oklch(27% 0.023 195.9)
#427A7B 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) | #73757B | 0.061 |
| Deuteranopia (no green cones) | #696E7B | 0.056 |
| Tritanopia (no blue cones) | #247D7A | 0.023 |
| Achromatopsia (no color) | #717171 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427A7B
#427A7B
oklch(54.2% 0.059 197.1)
- #8E6163
#8E6163
oklch(54.1% 0.059 16.3)
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 #427A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.034
- Deep Aqua #08787F ΔE 0.035
- Bluegreen #017A79 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.045
- Ocean #017B92 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.047
- Dark Aquamarine #017371 ΔE 0.048
- Battleship Gray #6C757D ΔE 0.052
Use #427A7B 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.