#63A7EA
Closest named color: Cornflower Blue (#6495ED). oklch(71.1% 0.121 249.5), rgb(99, 167, 234).
Aa
Black text reads best on this color (8.24:1).
About this color
#63A7EA is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.121 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.050 away. Black text reads best on it, at 8.24:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.24:1 |
| White text | 2.54:1 |
Values
| HEX | #63A7EA |
| RGB | rgb(99, 167, 234) |
| HSL | hsl(210, 76%, 65%) |
| OKLCH | oklch(71.1% 0.121 249.5) |
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 #63A7EA | 2.54:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #63A7EA | 8.24:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #63A7EA text on white | 2.54:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #63A7EA text on black | 8.24:1 | AAA | Lc -52.2 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9BC5F0
oklch(80.9% 0.076 249.4)
-
Step 400
400 (this color)
#63A7EA
oklch(71.1% 0.121 249.5)
-
Step 500
500
#2D8DE2
oklch(63% 0.155 249.8)
-
Step 600
600
#0076C9
oklch(55.6% 0.155 249.4)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#074374
oklch(37.6% 0.101 249.8)
-
Step 950
950
#082844
oklch(27% 0.064 249)
#63A7EA 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) | #8BAAED | 0.045 |
| Deuteranopia (no green cones) | #799CE9 | 0.034 |
| Tritanopia (no blue cones) | #00B7BE | 0.102 |
| Achromatopsia (no color) | #A2A2A2 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A7EA
#63A7EA
oklch(71.1% 0.121 249.5)
- #D29345
#D29345
oklch(71.1% 0.121 69.4)
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 #63A7EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.059
- Periwinkle Blue #8F99FB ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.069
- Deep Sky Blue #00BFFF ΔE 0.069
- Greyblue #77A1B5 ΔE 0.077
- Dark Sky Blue #448EE4 ΔE 0.077
- Perrywinkle #8F8CE7 ΔE 0.081
Use #63A7EA 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.