#428B74
Closest named color: Dusty Teal (#4C9085). oklch(58.3% 0.082 170.3), rgb(66, 139, 116).
Aa
Black text reads best on this color (5.17:1).
About this color
#428B74 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.082 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.029 away. Black text reads best on it, at 5.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #428B74 |
| RGB | rgb(66, 139, 116) |
| HSL | hsl(161, 36%, 40%) |
| OKLCH | oklch(58.3% 0.082 170.3) |
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 #428B74 | 4.05:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #428B74 | 5.17:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #428B74 text on white | 4.05:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #428B74 text on black | 5.17:1 | AA | Lc -34.1 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED7
oklch(88.6% 0.021 169.3)
-
Step 300
300
#AAC9BD
oklch(81% 0.037 170)
-
Step 400
400
#7BAD9B
oklch(70.7% 0.059 170.2)
-
Step 500
500
#579883
oklch(63% 0.075 171)
-
Step 600
600 (this color)
#428B74
oklch(58.3% 0.082 170.3)
-
Step 700
700
#2B6F5A
oklch(49.2% 0.077 169.8)
-
Step 800
800
#255A4A
oklch(42.7% 0.063 170.8)
-
Step 900
900
#244A3E
oklch(37.7% 0.049 170.9)
-
Step 950
950
#162B24
oklch(26.9% 0.03 170.6)
#428B74 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) | #888373 | 0.085 |
| Deuteranopia (no green cones) | #7C7B76 | 0.080 |
| Tritanopia (no blue cones) | #248C84 | 0.027 |
| Achromatopsia (no color) | #7E7E7E | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428B74
#428B74
oklch(58.3% 0.082 170.3)
- #A06782
#A06782
oklch(58.3% 0.081 350)
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 #428B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.029
- Slate Green #658D6D ΔE 0.037
- Viridian #1E9167 ΔE 0.038
- Dark Sage #598556 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.042
- Ocean Green #3D9973 ΔE 0.043
- Sea Green #2E8B57 ΔE 0.047
- Teal Green #0A9396 ΔE 0.050
Use #428B74 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.