#428C8B
Closest named color: Dusty Teal (#4C9085). oklch(59.3% 0.074 194.2), rgb(66, 140, 139).
Aa
Black text reads best on this color (5.35:1).
About this color
#428C8B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.074 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.020 away. Black text reads best on it, at 5.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.35:1 |
| White text | 3.92:1 |
Values
| HEX | #428C8B |
| RGB | rgb(66, 140, 139) |
| HSL | hsl(179, 36%, 40%) |
| OKLCH | oklch(59.3% 0.074 194.2) |
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 #428C8B | 3.92:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #428C8B | 5.35:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #428C8B text on white | 3.92:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #428C8B text on black | 5.35:1 | AA | Lc -35.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDD
oklch(88.5% 0.018 196.8)
-
Step 300
300
#A9C8C7
oklch(81% 0.033 194.1)
-
Step 400
400
#79ABAA
oklch(70.6% 0.053 194.4)
-
Step 500
500
#559795
oklch(63.2% 0.068 193)
-
Step 600
600 (this color)
#428C8B
oklch(59.3% 0.074 194.2)
-
Step 700
700
#276D6C
oklch(49.1% 0.069 193.8)
-
Step 800
800
#235958
oklch(42.8% 0.057 193.6)
-
Step 900
900
#224948
oklch(37.7% 0.044 193.2)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#428C8B 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) | #84868B | 0.077 |
| Deuteranopia (no green cones) | #787D8C | 0.072 |
| Tritanopia (no blue cones) | #07908B | 0.028 |
| Achromatopsia (no color) | #818181 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428C8B
#428C8B
oklch(59.3% 0.074 194.2)
- #A56C71
#A56C71
oklch(59.3% 0.073 13.8)
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 #428C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.020
- Teal Green #0A9396 ΔE 0.029
- Dark Cyan #008B8B ΔE 0.030
- Sea #3C9992 ΔE 0.037
- Teal Blue #01889F ΔE 0.045
- Blue Green #0F9B8E ΔE 0.046
- Persian Green #2A9D8F ΔE 0.050
- Teal #008080 ΔE 0.053
Use #428C8B 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.