#53B1FD
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.6% 0.142 245.9), rgb(83, 177, 253).
Aa
Black text reads best on this color (9.07:1).
About this color
#53B1FD is a medium-light, vivid blue. In OKLCH its lightness is 74%, its chroma 0.142 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.043 away. Black text reads best on it, at 9.07:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.07:1 |
| White text | 2.31:1 |
Values
| HEX | #53B1FD |
| RGB | rgb(83, 177, 253) |
| HSL | hsl(207, 98%, 66%) |
| OKLCH | oklch(73.6% 0.142 245.9) |
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 #53B1FD | 2.31:1 | Fails | Lc -50.2 | Large or bold text, headings |
| Black text on #53B1FD | 9.07:1 | AAA | Lc 58.6 | Large or bold text, headings |
| #53B1FD text on white | 2.31:1 | Fails | Lc 45.3 | Large or bold text, headings |
| #53B1FD text on black | 9.07:1 | AAA | Lc -56.8 | 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
#EFF6FD
oklch(97% 0.012 248)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BFDDF8
oklch(88.4% 0.049 245.6)
-
Step 300
300
#91C7F7
oklch(81% 0.088 246)
-
Step 400
400 (this color)
#53B1FD
oklch(73.6% 0.142 245.9)
-
Step 500
500
#008FE4
oklch(63% 0.162 246)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900
#004571
oklch(37.8% 0.096 245.5)
-
Step 950
950
#002846
oklch(26.9% 0.07 246.6)
#53B1FD 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) | #8FB3FF | 0.059 |
| Deuteranopia (no green cones) | #78A3FC | 0.046 |
| Tritanopia (no blue cones) | #00C3CC | 0.104 |
| Achromatopsia (no color) | #AAAAAA | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53B1FD
#53B1FD
oklch(73.6% 0.142 245.9)
- #E59538
#E59538
oklch(73.5% 0.142 65.8)
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 #53B1FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.043
- Carolina Blue #8AB8FE ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.073
- Vivid Sky Blue #4CC9F0 ΔE 0.073
- Bright Sky Blue #02CCFE ΔE 0.074
- Chefchaouen Blue #4895EF ΔE 0.077
- Lightblue #7BC8F6 ΔE 0.079
- Periwinkle Blue #8F99FB ΔE 0.081
Use #53B1FD 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.