#428F77
Closest named color: Dusty Teal (#4C9085). oklch(59.4% 0.085 170.4), rgb(66, 143, 119).
Aa
Black text reads best on this color (5.42:1).
About this color
#428F77 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.085 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.024 away. Black text reads best on it, at 5.42:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.42:1 |
| White text | 3.86:1 |
Values
| HEX | #428F77 |
| RGB | rgb(66, 143, 119) |
| HSL | hsl(161, 37%, 41%) |
| OKLCH | oklch(59.4% 0.085 170.4) |
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 #428F77 | 3.86:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #428F77 | 5.42:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #428F77 text on white | 3.86:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #428F77 text on black | 5.42:1 | AA | Lc -35.7 | 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 500.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A7CABD
oklch(81% 0.042 170.7)
-
Step 400
400
#75AF9A
oklch(70.8% 0.068 169.6)
-
Step 500
500 (this color)
#428F77
oklch(59.4% 0.085 170.4)
-
Step 600
600
#2C856B
oklch(55.7% 0.093 169.9)
-
Step 700
700
#1D7059
oklch(49% 0.086 170.1)
-
Step 800
800
#1B5B49
oklch(42.5% 0.071 170.7)
-
Step 900
900
#1E4B3D
oklch(37.7% 0.056 170.2)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#428F77 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) | #8B8776 | 0.087 |
| Deuteranopia (no green cones) | #807E79 | 0.085 |
| Tritanopia (no blue cones) | #209088 | 0.029 |
| Achromatopsia (no color) | #818181 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428F77
#428F77
oklch(59.4% 0.085 170.4)
- #A56985
#A56985
oklch(59.4% 0.085 350.5)
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 #428F77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.024
- Ocean Green #3D9973 ΔE 0.033
- Slate Green #658D6D ΔE 0.034
- Viridian #1E9167 ΔE 0.036
- Blue Green #0F9B8E ΔE 0.042
- Sea #3C9992 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.045
- Persian Green #2A9D8F ΔE 0.045
Use #428F77 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.