#63A1EA
Closest named color: Cornflower Blue (#6495ED). oklch(69.8% 0.126 253.5), rgb(99, 161, 234).
Aa
Black text reads best on this color (7.81:1).
About this color
#63A1EA is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.126 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.034 away. Black text reads best on it, at 7.81:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #63A1EA |
| RGB | rgb(99, 161, 234) |
| HSL | hsl(212, 76%, 65%) |
| OKLCH | oklch(69.8% 0.126 253.5) |
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 #63A1EA | 2.68:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #63A1EA | 7.81:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #63A1EA text on white | 2.68:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #63A1EA text on black | 7.81:1 | AAA | Lc -49.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9DC4F3
oklch(80.9% 0.079 253.4)
-
Step 400
400 (this color)
#63A1EA
oklch(69.8% 0.126 253.5)
-
Step 500
500
#378BE7
oklch(63.1% 0.16 253.4)
-
Step 600
600
#0072D5
oklch(55.5% 0.175 253.6)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004E95
oklch(42.6% 0.134 253.6)
-
Step 900
900
#0F4277
oklch(37.7% 0.104 253.4)
-
Step 950
950
#0B2746
oklch(27% 0.067 253.4)
#63A1EA 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) | #83A5ED | 0.038 |
| Deuteranopia (no green cones) | #7198E9 | 0.026 |
| Tritanopia (no blue cones) | #00B2BB | 0.108 |
| Achromatopsia (no color) | #9E9E9E | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A1EA
#63A1EA
oklch(69.8% 0.126 253.5)
- #CC9137
#CC9137
oklch(69.9% 0.126 74.1)
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 #63A1EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.045
- Periwinkle Blue #8F99FB ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
- Soft Blue #6488EA ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.070
- Dodger Blue #1E90FF ΔE 0.079
- Faded Blue #658CBB ΔE 0.080
Use #63A1EA 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.