#4E90B3
Closest named color: Dusty Blue (#5A86AD). oklch(62.4% 0.086 233.6), rgb(78, 144, 179).
Aa
Black text reads best on this color (5.96:1).
About this color
#4E90B3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.086 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.028 away. Black text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.96:1 |
| White text | 3.52:1 |
Values
| HEX | #4E90B3 |
| RGB | rgb(78, 144, 179) |
| HSL | hsl(201, 40%, 50%) |
| OKLCH | oklch(62.4% 0.086 233.6) |
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 #4E90B3 | 3.52:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #4E90B3 | 5.96:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #4E90B3 text on white | 3.52:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #4E90B3 text on black | 5.96:1 | AA | Lc -39.1 | 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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D8
oklch(81% 0.042 233.5)
-
Step 400
400
#76A8C4
oklch(70.6% 0.067 233.5)
-
Step 500
500 (this color)
#4E90B3
oklch(62.4% 0.086 233.6)
-
Step 600
600
#317CA1
oklch(55.6% 0.093 233.5)
-
Step 700
700
#22688A
oklch(49% 0.087 233.9)
-
Step 800
800
#1F5570
oklch(42.7% 0.072 233.9)
-
Step 900
900
#20465B
oklch(37.6% 0.056 235.2)
-
Step 950
950
#132935
oklch(26.9% 0.036 234.1)
#4E90B3 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) | #7F8FB5 | 0.056 |
| Deuteranopia (no green cones) | #7184B2 | 0.048 |
| Tritanopia (no blue cones) | #00999C | 0.063 |
| Achromatopsia (no color) | #898989 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E90B3
#4E90B3
oklch(62.4% 0.086 233.6)
- #B07955
#B07955
oklch(62.4% 0.085 53.7)
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 #4E90B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.028
- Faded Blue #658CBB ΔE 0.030
- Off Blue #5684AE ΔE 0.033
- Cool Blue #4984B8 ΔE 0.039
- Blue NCS #118AB2 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.043
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue Grey #758DA3 ΔE 0.045
Use #4E90B3 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.