#63ABE5
Closest named color: Deep Sky Blue (#00BFFF). oklch(71.8% 0.112 244.6), rgb(99, 171, 229).
Aa
Black text reads best on this color (8.48:1).
About this color
#63ABE5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.112 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.063 away. Black text reads best on it, at 8.48:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.48:1 |
| White text | 2.47:1 |
Values
| HEX | #63ABE5 |
| RGB | rgb(99, 171, 229) |
| HSL | hsl(207, 71%, 64%) |
| OKLCH | oklch(71.8% 0.112 244.6) |
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 #63ABE5 | 2.47:1 | Fails | Lc -53.5 | Large or bold text, headings |
| Black text on #63ABE5 | 8.48:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #63ABE5 text on white | 2.47:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #63ABE5 text on black | 8.48:1 | AAA | Lc -53.5 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF2
oklch(88.6% 0.039 243.5)
-
Step 300
300
#9BC6EB
oklch(80.9% 0.07 244.8)
-
Step 400
400 (this color)
#63ABE5
oklch(71.8% 0.112 244.6)
-
Step 500
500
#2690D9
oklch(63% 0.143 244.6)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A1
oklch(49.2% 0.123 244.5)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#01456F
oklch(37.7% 0.093 244.5)
-
Step 950
950
#072941
oklch(27.1% 0.059 244.2)
#63ABE5 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) | #92ACE8 | 0.052 |
| Deuteranopia (no green cones) | #819FE4 | 0.042 |
| Tritanopia (no blue cones) | #00B9BF | 0.091 |
| Achromatopsia (no color) | #A5A5A5 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63ABE5
#63ABE5
oklch(71.8% 0.112 244.6)
- #D49454
#D49454
oklch(71.7% 0.112 64.4)
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 #63ABE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.064
- Carolina Blue #8AB8FE ΔE 0.065
- Greyblue #77A1B5 ΔE 0.069
- Chefchaouen Blue #4895EF ΔE 0.072
- Turquoise Blue #06B1C4 ΔE 0.075
- Bluegrey #85A3B2 ΔE 0.077
- Periwinkle Blue #8F99FB ΔE 0.078
Use #63ABE5 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.