#428D90
Closest named color: Dusty Teal (#4C9085). oklch(59.7% 0.074 198.9), rgb(66, 141, 144).
Aa
Black text reads best on this color (5.44:1).
About this color
#428D90 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.074 and its hue 199°. 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 5.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.44:1 |
| White text | 3.85:1 |
Values
| HEX | #428D90 |
| RGB | rgb(66, 141, 144) |
| HSL | hsl(182, 37%, 41%) |
| OKLCH | oklch(59.7% 0.074 198.9) |
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 #428D90 | 3.85:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #428D90 | 5.44:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #428D90 text on white | 3.85:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #428D90 text on black | 5.44:1 | AA | Lc -35.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A6C8C9
oklch(80.8% 0.036 198.7)
-
Step 400
400
#75ACAE
oklch(70.7% 0.058 198.8)
-
Step 500
500 (this color)
#428D90
oklch(59.7% 0.074 198.9)
-
Step 600
600
#2B8285
oklch(55.7% 0.081 198.4)
-
Step 700
700
#1B6D71
oklch(49% 0.075 199.9)
-
Step 800
800
#1A595C
oklch(42.6% 0.062 199.7)
-
Step 900
900
#1D494B
oklch(37.6% 0.048 199.4)
-
Step 950
950
#122B2C
oklch(27% 0.031 198.9)
#428D90 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) | #848790 | 0.076 |
| Deuteranopia (no green cones) | #777E90 | 0.070 |
| Tritanopia (no blue cones) | #00918E | 0.030 |
| Achromatopsia (no color) | #828282 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428D90
#428D90
oklch(59.7% 0.074 198.9)
- #A76D6E
#A76D6E
oklch(59.6% 0.074 18.4)
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 #428D90, 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 0.027
- Dark Cyan #008B8B ΔE 0.032
- Sea #3C9992 ΔE 0.035
- Teal Blue #01889F ΔE 0.042
- Blue Green #0F9B8E ΔE 0.047
- Persian Green #2A9D8F ΔE 0.049
- Steel Grey #6F828A ΔE 0.053
Use #428D90 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.