#428183
Closest named color: Teal (#008080). oklch(56.2% 0.065 198.2), rgb(66, 129, 131).
Aa
Black text reads best on this color (4.69:1).
About this color
#428183 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.065 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.034 away. Black text reads best on it, at 4.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.69:1 |
| White text | 4.46:1 |
Values
| HEX | #428183 |
| RGB | rgb(66, 129, 131) |
| HSL | hsl(182, 33%, 39%) |
| OKLCH | oklch(56.2% 0.065 198.2) |
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 #428183 | 4.46:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #428183 | 4.69:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #428183 text on white | 4.46:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #428183 text on black | 4.69:1 | AA | Lc -30.8 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ACC7C7
oklch(81% 0.029 196.6)
-
Step 400
400
#7EAAAB
oklch(70.7% 0.047 197.9)
-
Step 500
500
#5C9597
oklch(63.1% 0.06 198.6)
-
Step 600
600 (this color)
#428183
oklch(56.2% 0.065 198.2)
-
Step 700
700
#316B6D
oklch(49% 0.06 198.4)
-
Step 800
800
#2A5759
oklch(42.6% 0.05 199.3)
-
Step 900
900
#274849
oklch(37.7% 0.039 198.1)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#428183 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) | #797C83 | 0.066 |
| Deuteranopia (no green cones) | #6E7483 | 0.061 |
| Tritanopia (no blue cones) | #1B8581 | 0.027 |
| Achromatopsia (no color) | #777777 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428183
#428183
oklch(56.2% 0.065 198.2)
- #986667
#986667
oklch(56.3% 0.065 18)
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 #428183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.034
- Dark Cyan #008B8B ΔE 0.037
- Grey Blue #647D8E ΔE 0.045
- Bluegreen #017A79 ΔE 0.046
- Deep Aqua #08787F ΔE 0.046
- Teal Blue #01889F ΔE 0.046
- Ocean #017B92 ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.047
Use #428183 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.