#428187
Closest named color: Teal (#008080). oklch(56.4% 0.065 203.6), rgb(66, 129, 135).
Aa
Black text reads best on this color (4.72:1).
About this color
#428187 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.065 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.036 away. Black text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #428187 |
| RGB | rgb(66, 129, 135) |
| HSL | hsl(185, 34%, 39%) |
| OKLCH | oklch(56.4% 0.065 203.6) |
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 #428187 | 4.44:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #428187 | 4.72:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #428187 text on white | 4.44:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #428187 text on black | 4.72:1 | AA | Lc -31.0 | Non-text elements, placeholder text |
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
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDCDE
oklch(88.4% 0.016 206.4)
-
Step 300
300
#ACC7C9
oklch(81% 0.029 202.1)
-
Step 400
400
#7EAAAE
oklch(70.8% 0.048 203.1)
-
Step 500
500
#5C949A
oklch(63% 0.06 204.4)
-
Step 600
600 (this color)
#428187
oklch(56.4% 0.065 203.6)
-
Step 700
700
#316B70
oklch(49.1% 0.061 202.9)
-
Step 800
800
#2A575B
oklch(42.7% 0.05 203.1)
-
Step 900
900
#27484B
oklch(37.8% 0.039 203.2)
-
Step 950
950
#172A2C
oklch(27% 0.025 204.3)
#428187 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) | #797C87 | 0.066 |
| Deuteranopia (no green cones) | #6D7487 | 0.060 |
| Tritanopia (no blue cones) | #168583 | 0.030 |
| Achromatopsia (no color) | #777777 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428187
#428187
oklch(56.4% 0.065 203.6)
- #996663
#996663
oklch(56.4% 0.067 23.1)
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 #428187, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.036
- Dark Cyan #008B8B ΔE 0.037
- Grey Blue #647D8E ΔE 0.042
- Teal Blue #01889F ΔE 0.042
- Ocean #017B92 ΔE 0.044
- Cerulean #457B9D ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
- Battleship Grey #6B7C85 ΔE 0.047
Use #428187 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.