#428C8E
Closest named color: Dusty Teal (#4C9085). oklch(59.4% 0.073 197.7), rgb(66, 140, 142).
Aa
Black text reads best on this color (5.37:1).
About this color
#428C8E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.073 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.023 away. Black text reads best on it, at 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #428C8E |
| RGB | rgb(66, 140, 142) |
| HSL | hsl(182, 37%, 41%) |
| OKLCH | oklch(59.4% 0.073 197.7) |
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 #428C8E | 3.90:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #428C8E | 5.37:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #428C8E text on white | 3.90:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #428C8E text on black | 5.37:1 | AA | Lc -35.3 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A7C8C9
oklch(80.9% 0.035 198.7)
-
Step 400
400
#75ACAD
oklch(70.7% 0.058 197.4)
-
Step 500
500 (this color)
#428C8E
oklch(59.4% 0.073 197.7)
-
Step 600
600
#2C8284
oklch(55.7% 0.08 197.3)
-
Step 700
700
#1D6D70
oklch(49% 0.074 198.7)
-
Step 800
800
#1C595B
oklch(42.7% 0.061 198.2)
-
Step 900
900
#1E494B
oklch(37.6% 0.047 199.4)
-
Step 950
950
#132B2C
oklch(27% 0.03 199.1)
#428C8E 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) | #84868E | 0.077 |
| Deuteranopia (no green cones) | #777D8F | 0.071 |
| Tritanopia (no blue cones) | #00908C | 0.030 |
| Achromatopsia (no color) | #818181 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428C8E
#428C8E
oklch(59.4% 0.073 197.7)
- #A66D6E
#A66D6E
oklch(59.5% 0.073 18.3)
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 #428C8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.023
- Teal Green #0A9396 ΔE 0.029
- Dark Cyan #008B8B ΔE 0.031
- Sea #3C9992 ΔE 0.037
- Teal Blue #01889F ΔE 0.042
- Blue Green #0F9B8E ΔE 0.048
- Persian Green #2A9D8F ΔE 0.051
- Steel Grey #6F828A ΔE 0.052
Use #428C8E 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.