#428A87
Closest named color: Dusty Teal (#4C9085). oklch(58.7% 0.072 191.7), rgb(66, 138, 135).
Aa
Black text reads best on this color (5.21:1).
About this color
#428A87 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.072 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.022 away. Black text reads best on it, at 5.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.21:1 |
| White text | 4.02:1 |
Values
| HEX | #428A87 |
| RGB | rgb(66, 138, 135) |
| HSL | hsl(178, 35%, 40%) |
| OKLCH | oklch(58.7% 0.072 191.7) |
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 #428A87 | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #428A87 | 5.21:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #428A87 text on white | 4.02:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #428A87 text on black | 5.21:1 | AA | Lc -34.3 | 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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#AAC8C6
oklch(81% 0.032 191.6)
-
Step 400
400
#7BABA9
oklch(70.7% 0.051 192.8)
-
Step 500
500
#569794
oklch(63.2% 0.067 191.8)
-
Step 600
600 (this color)
#428A87
oklch(58.7% 0.072 191.7)
-
Step 700
700
#2A6D6A
oklch(49.2% 0.067 191.1)
-
Step 800
800
#245957
oklch(42.8% 0.056 191.9)
-
Step 900
900
#234947
oklch(37.7% 0.044 191)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#428A87 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) | #838487 | 0.076 |
| Deuteranopia (no green cones) | #777B88 | 0.072 |
| Tritanopia (no blue cones) | #118D89 | 0.025 |
| Achromatopsia (no color) | #7F7F7F | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428A87
#428A87
oklch(58.7% 0.072 191.7)
- #A26A71
#A26A71
oklch(58.6% 0.072 11.3)
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 #428A87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.022
- Dark Cyan #008B8B ΔE 0.028
- Teal Green #0A9396 ΔE 0.034
- Sea #3C9992 ΔE 0.043
- Teal Blue #01889F ΔE 0.047
- Teal #008080 ΔE 0.048
- Blue Green #0F9B8E ΔE 0.050
- Slate Green #658D6D ΔE 0.052
Use #428A87 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.