#4291EC
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.1% 0.157 254), rgb(66, 145, 236).
Aa
Black text reads best on this color (6.49:1).
About this color
#4291EC is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.157 and its hue 254°. 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 6.49:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.49:1 |
| White text | 3.23:1 |
Values
| HEX | #4291EC |
| RGB | rgb(66, 145, 236) |
| HSL | hsl(212, 82%, 59%) |
| OKLCH | oklch(65.1% 0.157 254) |
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 #4291EC | 3.23:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #4291EC | 6.49:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #4291EC text on white | 3.23:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #4291EC text on black | 6.49:1 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF5
oklch(88.4% 0.042 253.8)
-
Step 300
300
#9FC4F2
oklch(81% 0.077 254.1)
-
Step 400
400
#68A4EB
oklch(70.8% 0.122 253.5)
-
Step 500
500 (this color)
#4291EC
oklch(65.1% 0.157 254)
-
Step 600
600
#0F72D3
oklch(55.5% 0.171 254.1)
-
Step 700
700
#0060B6
oklch(49.2% 0.156 253.8)
-
Step 800
800
#074E94
oklch(42.6% 0.131 254.1)
-
Step 900
900
#124276
oklch(37.7% 0.102 253.7)
-
Step 950
950
#0D2745
oklch(27% 0.064 254)
#4291EC 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) | #6798F0 | 0.041 |
| Deuteranopia (no green cones) | #4C88EA | 0.023 |
| Tritanopia (no blue cones) | #00A6B3 | 0.120 |
| Achromatopsia (no color) | #8F8F8F | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4291EC
#4291EC
oklch(65.1% 0.157 254)
- #C18000
#C18000
oklch(65.1% 0.138 73.5)
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 #4291EC, 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 0.013
- Dodger Blue #1E90FF ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.034
- Soft Blue #6488EA ΔE 0.036
- Water Blue #0E87CC ΔE 0.062
- Cornflower #6A79F7 ΔE 0.072
- Clear Blue #247AFD ΔE 0.073
Use #4291EC 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.