#428C77
Closest named color: Dusty Teal (#4C9085). oklch(58.6% 0.081 172.4), rgb(66, 140, 119).
Aa
Black text reads best on this color (5.24:1).
About this color
#428C77 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.081 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.025 away. Black text reads best on it, at 5.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #428C77 |
| RGB | rgb(66, 140, 119) |
| HSL | hsl(163, 36%, 40%) |
| OKLCH | oklch(58.6% 0.081 172.4) |
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 #428C77 | 4.00:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #428C77 | 5.24:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #428C77 text on white | 4.00:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #428C77 text on black | 5.24:1 | AA | Lc -34.5 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#AAC9BE
oklch(81% 0.037 171.9)
-
Step 400
400
#7BAD9D
oklch(70.7% 0.058 172.7)
-
Step 500
500
#569885
oklch(63% 0.074 173.3)
-
Step 600
600 (this color)
#428C77
oklch(58.6% 0.081 172.4)
-
Step 700
700
#2A6F5C
oklch(49.2% 0.076 172)
-
Step 800
800
#245A4B
oklch(42.6% 0.063 172.3)
-
Step 900
900
#234A3F
oklch(37.7% 0.049 173.1)
-
Step 950
950
#152B25
oklch(26.9% 0.03 174.4)
#428C77 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) | #888476 | 0.084 |
| Deuteranopia (no green cones) | #7D7C78 | 0.080 |
| Tritanopia (no blue cones) | #218D86 | 0.027 |
| Achromatopsia (no color) | #7F7F7F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428C77
#428C77
oklch(58.6% 0.081 172.4)
- #A26881
#A26881
oklch(58.7% 0.081 352.5)
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 #428C77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.025
- Slate Green #658D6D ΔE 0.037
- Dark Cyan #008B8B ΔE 0.040
- Viridian #1E9167 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.042
- Dark Sage #598556 ΔE 0.045
- Sea #3C9992 ΔE 0.046
- Teal Green #0A9396 ΔE 0.047
Use #428C77 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.