#428394
Closest named color: Teal Blue (#01889F). oklch(57.4% 0.071 217.1), rgb(66, 131, 148).
Aa
Black text reads best on this color (4.90:1).
About this color
#428394 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.071 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.031 away. Black text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #428394 |
| RGB | rgb(66, 131, 148) |
| HSL | hsl(192, 38%, 42%) |
| OKLCH | oklch(57.4% 0.071 217.1) |
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 #428394 | 4.28:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #428394 | 4.90:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #428394 text on white | 4.28:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #428394 text on black | 4.90:1 | AA | Lc -32.2 | 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
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#AAC6CE
oklch(80.8% 0.032 216.9)
-
Step 400
400
#7CA9B6
oklch(70.7% 0.052 217.5)
-
Step 500
500
#5994A3
oklch(63.2% 0.065 215.8)
-
Step 600
600 (this color)
#428394
oklch(57.4% 0.071 217.1)
-
Step 700
700
#2E6A79
oklch(49.1% 0.066 216.7)
-
Step 800
800
#275663
oklch(42.6% 0.055 218.4)
-
Step 900
900
#254750
oklch(37.6% 0.042 216.9)
-
Step 950
950
#162A2F
oklch(27% 0.027 215.5)
#428394 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) | #788095 | 0.063 |
| Deuteranopia (no green cones) | #6B7694 | 0.057 |
| Tritanopia (no blue cones) | #008988 | 0.043 |
| Achromatopsia (no color) | #7A7A7A | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428394
#428394
oklch(57.4% 0.071 217.1)
- #9E6A5A
#9E6A5A
oklch(57.5% 0.072 37.8)
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 #428394, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.031
- Cerulean #457B9D ΔE 0.031
- Stormy Blue #507B9C ΔE 0.032
- Grey Blue #647D8E ΔE 0.037
- Dark Cyan #008B8B ΔE 0.042
- Ocean #017B92 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.046
- Dull Blue #49759C ΔE 0.047
Use #428394 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.