#4270FB
Closest named color: Clear Blue (#247AFD). oklch(59.3% 0.213 266.1), rgb(66, 112, 251).
Aa
Black text reads best on this color (4.94:1).
About this color
#4270FB is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.213 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.028 away. Black text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #4270FB |
| RGB | rgb(66, 112, 251) |
| HSL | hsl(225, 96%, 62%) |
| OKLCH | oklch(59.3% 0.213 266.1) |
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 #4270FB | 4.24:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #4270FB | 4.94:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #4270FB text on white | 4.24:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #4270FB text on black | 4.94:1 | AA | Lc -32.9 | 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 600.
-
Step 50
50
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFE
oklch(63.1% 0.196 266)
-
Step 600
600 (this color)
#4270FB
oklch(59.3% 0.213 266.1)
-
Step 700
700
#2B51CF
oklch(49% 0.199 266.1)
-
Step 800
800
#2444A7
oklch(42.7% 0.164 265.9)
-
Step 900
900
#213B84
oklch(37.8% 0.127 265.8)
-
Step 950
950
#14234E
oklch(27.1% 0.082 266.5)
#4270FB 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) | #0084FF | 0.051 |
| Deuteranopia (no green cones) | #0073F8 | 0.032 |
| Tritanopia (no blue cones) | #0092AB | 0.168 |
| Achromatopsia (no color) | #7B7B7B | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4270FB
#4270FB
oklch(59.3% 0.213 266.1)
- #9E7800
#9E7800
oklch(59.4% 0.121 86.3)
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 #4270FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.028
- Neon Blue #4361EE ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.042
- Bright Blue #0165FC ΔE 0.047
- Cornflower #6A79F7 ΔE 0.053
- Azul #1D5DEC ΔE 0.062
- Medium Slate Blue #7B68EE ΔE 0.072
Use #4270FB 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.