#53A3EF
Closest named color: Cornflower Blue (#6495ED). oklch(69.8% 0.137 249.3), rgb(83, 163, 239).
Aa
Black text reads best on this color (7.85:1).
About this color
#53A3EF is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.137 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.038 away. Black text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #53A3EF |
| RGB | rgb(83, 163, 239) |
| HSL | hsl(209, 83%, 63%) |
| OKLCH | oklch(69.8% 0.137 249.3) |
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 #53A3EF | 2.67:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #53A3EF | 7.85:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #53A3EF text on white | 2.67:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #53A3EF text on black | 7.85:1 | AAA | Lc -50.2 | 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
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C2DCF8
oklch(88.4% 0.048 250.3)
-
Step 300
300
#96C6F6
oklch(81% 0.085 248.9)
-
Step 400
400 (this color)
#53A3EF
oklch(69.8% 0.137 249.3)
-
Step 500
500
#028DED
oklch(63.1% 0.174 249.2)
-
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
#00518C
oklch(42.7% 0.118 249.2)
-
Step 900
900
#004376
oklch(37.6% 0.105 249.5)
-
Step 950
950
#022848
oklch(27.1% 0.072 249.1)
#53A3EF 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) | #82A6F2 | 0.049 |
| Deuteranopia (no green cones) | #6C97EE | 0.036 |
| Tritanopia (no blue cones) | #00B5BE | 0.106 |
| Achromatopsia (no color) | #9E9E9E | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53A3EF
#53A3EF
oklch(69.8% 0.137 249.3)
- #D48C2B
#D48C2B
oklch(69.8% 0.137 69)
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 #53A3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.038
- Chefchaouen Blue #4895EF ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.060
- Soft Blue #6488EA ΔE 0.070
- Periwinkle Blue #8F99FB ΔE 0.071
- Dodger Blue #1E90FF ΔE 0.071
- Deep Sky Blue #00BFFF ΔE 0.074
- Perrywinkle #8F8CE7 ΔE 0.082
Use #53A3EF 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.