#4579EB
Closest named color: Clear Blue (#247AFD). oklch(60.1% 0.181 263.5), rgb(69, 121, 235).
Aa
Black text reads best on this color (5.18:1).
About this color
#4579EB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.181 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.033 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #4579EB |
| RGB | rgb(69, 121, 235) |
| HSL | hsl(221, 81%, 60%) |
| OKLCH | oklch(60.1% 0.181 263.5) |
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 #4579EB | 4.04:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #4579EB | 5.18:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #4579EB text on white | 4.04:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #4579EB text on black | 5.18:1 | AA | Lc -34.3 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A3C1FB
oklch(81% 0.089 263.3)
-
Step 400
400
#729EF9
oklch(70.7% 0.142 263.6)
-
Step 500
500 (this color)
#4579EB
oklch(60.1% 0.181 263.5)
-
Step 600
600
#3269E4
oklch(55.6% 0.196 263.3)
-
Step 700
700
#2656C6
oklch(49% 0.183 263.5)
-
Step 800
800
#2047A0
oklch(42.6% 0.151 263.5)
-
Step 900
900
#1F3D7F
oklch(37.7% 0.118 263.4)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#4579EB 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) | #3886EF | 0.033 |
| Deuteranopia (no green cones) | #0077E9 | 0.036 |
| Tritanopia (no blue cones) | #0094A7 | 0.145 |
| Achromatopsia (no color) | #7E7E7E | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4579EB
#4579EB
oklch(60.1% 0.181 263.5)
- #A37800
#A37800
oklch(59.9% 0.123 83.4)
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 #4579EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.033
- Royal Blue #4169E1 ΔE 0.043
- Cornflower #6A79F7 ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.049
- Soft Blue #6488EA ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.058
- Neon Blue #4361EE ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.062
Use #4579EB 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.