#63A3F2
Closest named color: Cornflower Blue (#6495ED). oklch(70.7% 0.134 254.6), rgb(99, 163, 242).
Aa
Black text reads best on this color (8.05:1).
About this color
#63A3F2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.134 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.037 away. Black text reads best on it, at 8.05:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.05:1 |
| White text | 2.60:1 |
Values
| HEX | #63A3F2 |
| RGB | rgb(99, 163, 242) |
| HSL | hsl(213, 85%, 67%) |
| OKLCH | oklch(70.7% 0.134 254.6) |
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 #63A3F2 | 2.60:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #63A3F2 | 8.05:1 | AAA | Lc 53.3 | Large or bold text, headings |
| #63A3F2 text on white | 2.60:1 | Fails | Lc 50.7 | Large or bold text, headings |
| #63A3F2 text on black | 8.05:1 | AAA | Lc -51.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F6
oklch(80.9% 0.083 254.3)
-
Step 400
400 (this color)
#63A3F2
oklch(70.7% 0.134 254.6)
-
Step 500
500
#328AEE
oklch(63.2% 0.171 254.4)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#0C417B
oklch(37.7% 0.112 254.7)
-
Step 950
950
#0A2748
oklch(27.1% 0.07 254.2)
#63A3F2 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) | #82A8F5 | 0.038 |
| Deuteranopia (no green cones) | #6F9AF0 | 0.025 |
| Tritanopia (no blue cones) | #00B5BF | 0.113 |
| Achromatopsia (no color) | #A0A0A0 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A3F2
#63A3F2
oklch(70.7% 0.134 254.6)
- #D1932D
#D1932D
oklch(70.8% 0.134 74.9)
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 #63A3F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.037
- Chefchaouen Blue #4895EF ΔE 0.048
- Periwinkle Blue #8F99FB ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.068
- Soft Blue #6488EA ΔE 0.070
- Perrywinkle #8F8CE7 ΔE 0.072
- Carolina Blue #8AB8FE ΔE 0.074
- Deep Sky Blue #00BFFF ΔE 0.077
Use #63A3F2 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.