#428AAA
Closest named color: Dusty Blue (#5A86AD). oklch(60.1% 0.087 229.6), rgb(66, 138, 170).
Aa
Black text reads best on this color (5.44:1).
About this color
#428AAA is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.087 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.026 away. Black text reads best on it, at 5.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.44:1 |
| White text | 3.85:1 |
Values
| HEX | #428AAA |
| RGB | rgb(66, 138, 170) |
| HSL | hsl(198, 44%, 46%) |
| OKLCH | oklch(60.1% 0.087 229.6) |
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 #428AAA | 3.85:1 | AA large text | Lc -71.3 | Content text, not long reading |
| Black text on #428AAA | 5.44:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #428AAA text on white | 3.85:1 | AA large text | Lc 65.8 | Content text, not long reading |
| #428AAA text on black | 5.44:1 | AA | Lc -35.8 | 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 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A5C6D7
oklch(80.8% 0.043 230.3)
-
Step 400
400
#73A9C3
oklch(70.7% 0.068 229.7)
-
Step 500
500 (this color)
#428AAA
oklch(60.1% 0.087 229.6)
-
Step 600
600
#2A7DA0
oklch(55.6% 0.095 230.2)
-
Step 700
700
#1B6988
oklch(49% 0.087 229.8)
-
Step 800
800
#1A566F
oklch(42.7% 0.073 230)
-
Step 900
900
#1D475A
oklch(37.7% 0.057 230.4)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#428AAA 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) | #7A88AC | 0.062 |
| Deuteranopia (no green cones) | #6B7DAA | 0.054 |
| Tritanopia (no blue cones) | #009394 | 0.057 |
| Achromatopsia (no color) | #828282 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428AAA
#428AAA
oklch(60.1% 0.087 229.6)
- #AA7150
#AA7150
oklch(60.1% 0.086 50.6)
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 #428AAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.026
- Off Blue #5684AE ΔE 0.026
- Blue NCS #118AB2 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.032
- Teal Blue #01889F ΔE 0.037
- Stormy Blue #507B9C ΔE 0.043
- Cerulean #457B9D ΔE 0.043
Use #428AAA 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.