#63A7DE
Closest named color: Cornflower Blue (#6495ED). oklch(70.6% 0.107 244.5), rgb(99, 167, 222).
Aa
Black text reads best on this color (8.11:1).
About this color
#63A7DE is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.107 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.059 away. Black text reads best on it, at 8.11:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.11:1 |
| White text | 2.58:1 |
Values
| HEX | #63A7DE |
| RGB | rgb(99, 167, 222) |
| HSL | hsl(207, 65%, 63%) |
| OKLCH | oklch(70.6% 0.107 244.5) |
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 #63A7DE | 2.58:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #63A7DE | 8.11:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #63A7DE text on white | 2.58:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #63A7DE text on black | 8.11:1 | AAA | Lc -51.5 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C5DCF0
oklch(88.4% 0.037 244.4)
-
Step 300
300
#9DC6E9
oklch(80.9% 0.066 244.5)
-
Step 400
400 (this color)
#63A7DE
oklch(70.6% 0.107 244.5)
-
Step 500
500
#2F90D5
oklch(63% 0.136 244.4)
-
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
#08456D
oklch(37.7% 0.089 244.6)
-
Step 950
950
#092940
oklch(27.1% 0.056 244.1)
#63A7DE 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) | #8FA8E1 | 0.050 |
| Deuteranopia (no green cones) | #7F9BDD | 0.041 |
| Tritanopia (no blue cones) | #00B4BA | 0.088 |
| Achromatopsia (no color) | #A1A1A1 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A7DE
#63A7DE
oklch(70.6% 0.107 244.5)
- #CE9255
#CE9255
oklch(70.6% 0.106 65.1)
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 #63A7DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.059
- Greyblue #77A1B5 ΔE 0.060
- Chefchaouen Blue #4895EF ΔE 0.067
- Bluegrey #85A3B2 ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.072
- Bluey Grey #89A0B0 ΔE 0.073
- Deep Sky Blue #00BFFF ΔE 0.074
- Carolina Blue #8AB8FE ΔE 0.077
Use #63A7DE 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.