#428590
Closest named color: Teal Blue (#01889F). oklch(57.7% 0.07 209.4), rgb(66, 133, 144).
Aa
Black text reads best on this color (4.98:1).
About this color
#428590 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 58%, its chroma 0.070 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.033 away. Black text reads best on it, at 4.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.98:1 |
| White text | 4.20:1 |
Values
| HEX | #428590 |
| RGB | rgb(66, 133, 144) |
| HSL | hsl(188, 37%, 41%) |
| OKLCH | oklch(57.7% 0.07 209.4) |
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 #428590 | 4.20:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #428590 | 4.98:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #428590 text on white | 4.20:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #428590 text on black | 4.98:1 | AA | Lc -32.8 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CC
oklch(81% 0.032 209.2)
-
Step 400
400
#7CAAB2
oklch(70.8% 0.05 209.4)
-
Step 500
500
#58949F
oklch(63% 0.064 210.5)
-
Step 600
600 (this color)
#428590
oklch(57.7% 0.07 209.4)
-
Step 700
700
#2D6B75
oklch(49.2% 0.065 209.6)
-
Step 800
800
#27575F
oklch(42.7% 0.053 209.8)
-
Step 900
900
#25484E
oklch(37.8% 0.042 209.8)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#428590 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) | #7B8191 | 0.067 |
| Deuteranopia (no green cones) | #6F7890 | 0.060 |
| Tritanopia (no blue cones) | #028A88 | 0.037 |
| Achromatopsia (no color) | #7B7B7B | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428590
#428590
oklch(57.7% 0.07 209.4)
- #9F6A61
#9F6A61
oklch(57.8% 0.07 30)
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 #428590, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.033
- Dark Cyan #008B8B ΔE 0.036
- Grey Blue #647D8E ΔE 0.040
- Cerulean #457B9D ΔE 0.041
- Stormy Blue #507B9C ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.044
- Teal Green #0A9396 ΔE 0.044
- Teal #008080 ΔE 0.046
Use #428590 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.