#428EAE
Closest named color: Dusty Blue (#5A86AD). oklch(61.2% 0.089 228.4), rgb(66, 142, 174).
Aa
Black text reads best on this color (5.71:1).
About this color
#428EAE is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.089 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.029 away. Black text reads best on it, at 5.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #428EAE |
| RGB | rgb(66, 142, 174) |
| HSL | hsl(198, 45%, 47%) |
| OKLCH | oklch(61.2% 0.089 228.4) |
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 #428EAE | 3.67:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #428EAE | 5.71:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #428EAE text on white | 3.67:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #428EAE text on black | 5.71:1 | AA | Lc -37.5 | 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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400
#71AAC3
oklch(70.8% 0.07 227.4)
-
Step 500
500 (this color)
#428EAE
oklch(61.2% 0.089 228.4)
-
Step 600
600
#247EA0
oklch(55.7% 0.097 228.2)
-
Step 700
700
#146A89
oklch(49.1% 0.09 228.5)
-
Step 800
800
#16566F
oklch(42.6% 0.074 229)
-
Step 900
900
#1A475A
oklch(37.6% 0.058 229.1)
-
Step 950
950
#112A35
oklch(27.1% 0.037 229)
#428EAE 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) | #7D8CB0 | 0.064 |
| Deuteranopia (no green cones) | #6E80AE | 0.057 |
| Tritanopia (no blue cones) | #009798 | 0.057 |
| Achromatopsia (no color) | #858585 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428EAE
#428EAE
oklch(61.2% 0.089 228.4)
- #AF7353
#AF7353
oklch(61.1% 0.089 48.6)
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 #428EAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.029
- Blue NCS #118AB2 ΔE 0.030
- Off Blue #5684AE ΔE 0.032
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.038
- Faded Blue #658CBB ΔE 0.042
- Teal Blue #01889F ΔE 0.043
- Teal Green #0A9396 ΔE 0.053
Use #428EAE 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.