#2F63EB
Closest named color: Neon Blue (#4361EE). oklch(54.9% 0.213 264.4), rgb(47, 99, 235).
Aa
White text reads best on this color (5.11:1).
About this color
#2F63EB is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.213 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.018 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #2F63EB |
| RGB | rgb(47, 99, 235) |
| HSL | hsl(223, 82%, 55%) |
| OKLCH | oklch(54.9% 0.213 264.4) |
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 #2F63EB | 5.11:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #2F63EB | 4.10:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #2F63EB text on white | 5.11:1 | AA | Lc 74.6 | Content text, not long reading |
| #2F63EB text on black | 4.10:1 | AA large text | Lc -27.1 | Dividers and decoration only |
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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FD
oklch(88.4% 0.053 265.3)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4C80FE
oklch(63.1% 0.196 264.5)
-
Step 600
600 (this color)
#2F63EB
oklch(54.9% 0.213 264.4)
-
Step 700
700
#2453CF
oklch(49.1% 0.199 264.3)
-
Step 800
800
#1F45A7
oklch(42.7% 0.164 264.4)
-
Step 900
900
#1E3B84
oklch(37.6% 0.128 264.6)
-
Step 950
950
#12234D
oklch(26.9% 0.081 264.9)
#2F63EB 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) | #0077F0 | 0.048 |
| Deuteranopia (no green cones) | #0065E8 | 0.020 |
| Tritanopia (no blue cones) | #00869D | 0.167 |
| Achromatopsia (no color) | #6E6E6E | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F63EB
#2F63EB
oklch(54.9% 0.213 264.4)
- #906B00
#906B00
oklch(55% 0.113 84.6)
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 #2F63EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.018
- Azul #1D5DEC ΔE 0.020
- Cerulean Blue #056EEE ΔE 0.028
- Royal Blue #4169E1 ΔE 0.028
- Bright Blue #0165FC ΔE 0.031
- Warm Blue #4B57DB ΔE 0.042
- Electric Blue #0652FF ΔE 0.054
- Clear Blue #247AFD ΔE 0.059
Use #2F63EB 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.