#4290AD
Closest named color: Dusty Blue (#5A86AD). oklch(61.6% 0.088 225.4), rgb(66, 144, 173).
Aa
Black text reads best on this color (5.82:1).
About this color
#4290AD is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.088 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.034 away. Black text reads best on it, at 5.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #4290AD |
| RGB | rgb(66, 144, 173) |
| HSL | hsl(196, 45%, 47%) |
| OKLCH | oklch(61.6% 0.088 225.4) |
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 #4290AD | 3.60:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #4290AD | 5.82:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #4290AD text on white | 3.60:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #4290AD text on black | 5.82:1 | AA | Lc -38.2 | 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 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
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A4C7D6
oklch(80.9% 0.043 225.7)
-
Step 400
400
#71AAC1
oklch(70.7% 0.068 225.3)
-
Step 500
500 (this color)
#4290AD
oklch(61.6% 0.088 225.4)
-
Step 600
600
#217E9D
oklch(55.5% 0.095 225.4)
-
Step 700
700
#116B87
oklch(49.2% 0.089 225.3)
-
Step 800
800
#14576D
oklch(42.7% 0.073 225.1)
-
Step 900
900
#194859
oklch(37.8% 0.058 225.5)
-
Step 950
950
#102A34
oklch(27% 0.037 225.8)
#4290AD 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) | #808DAF | 0.067 |
| Deuteranopia (no green cones) | #7182AD | 0.059 |
| Tritanopia (no blue cones) | #009999 | 0.054 |
| Achromatopsia (no color) | #878787 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4290AD
#4290AD
oklch(61.6% 0.088 225.4)
- #B17458
#B17458
oklch(61.6% 0.087 45.3)
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 #4290AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.034
- Blue NCS #118AB2 ΔE 0.034
- Off Blue #5684AE ΔE 0.038
- Cool Blue #4984B8 ΔE 0.043
- Faded Blue #658CBB ΔE 0.044
- Steel Blue #4682B4 ΔE 0.045
- Teal Blue #01889F ΔE 0.045
- Teal Green #0A9396 ΔE 0.049
Use #4290AD 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.