#4E90EB
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.3% 0.152 256.9), rgb(78, 144, 235).
Aa
Black text reads best on this color (6.51:1).
About this color
#4E90EB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.152 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.013 away. Black text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #4E90EB |
| RGB | rgb(78, 144, 235) |
| HSL | hsl(215, 80%, 61%) |
| OKLCH | oklch(65.3% 0.152 256.9) |
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 #4E90EB | 3.22:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #4E90EB | 6.51:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #4E90EB text on white | 3.22:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #4E90EB text on black | 6.51:1 | AA | Lc -42.5 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F1
oklch(80.9% 0.075 256.7)
-
Step 400
400
#6FA2EA
oklch(70.6% 0.119 257.1)
-
Step 500
500 (this color)
#4E90EB
oklch(65.3% 0.152 256.9)
-
Step 600
600
#2771D2
oklch(55.6% 0.166 257)
-
Step 700
700
#195EB6
oklch(49.1% 0.155 257)
-
Step 800
800
#184D93
oklch(42.7% 0.128 257.1)
-
Step 900
900
#1B4175
oklch(37.7% 0.099 257.1)
-
Step 950
950
#112645
oklch(27% 0.064 258.1)
#4E90EB 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) | #6797EF | 0.033 |
| Deuteranopia (no green cones) | #4F89E9 | 0.018 |
| Tritanopia (no blue cones) | #00A5B2 | 0.122 |
| Achromatopsia (no color) | #8F8F8F | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E90EB
#4E90EB
oklch(65.3% 0.152 256.9)
- #BE8300
#BE8300
oklch(65.3% 0.137 77)
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 #4E90EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.013
- Dark Sky Blue #448EE4 ΔE 0.015
- Cornflower Blue #6495ED ΔE 0.027
- Soft Blue #6488EA ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.039
- Water Blue #0E87CC ΔE 0.066
- Cornflower #6A79F7 ΔE 0.067
- Faded Blue #658CBB ΔE 0.073
Use #4E90EB 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.