#5BABFF
Closest named color: Cornflower Blue (#6495ED). oklch(72.7% 0.146 251.5), rgb(91, 171, 255).
Aa
Black text reads best on this color (8.71:1).
About this color
#5BABFF is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.146 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.058 away. Black text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.71:1 |
| White text | 2.40:1 |
Values
| HEX | #5BABFF |
| RGB | rgb(91, 171, 255) |
| HSL | hsl(211, 100%, 68%) |
| OKLCH | oklch(72.7% 0.146 251.5) |
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 #5BABFF | 2.40:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #5BABFF | 8.71:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #5BABFF text on white | 2.40:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #5BABFF text on black | 8.71:1 | AAA | Lc -54.8 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C1DCFA
oklch(88.4% 0.051 251.1)
-
Step 300
300
#95C5FA
oklch(80.9% 0.091 251.4)
-
Step 400
400 (this color)
#5BABFF
oklch(72.7% 0.146 251.5)
-
Step 500
500
#008BF5
oklch(63.2% 0.186 251.5)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950
#02274A
oklch(27% 0.076 251.4)
#5BABFF 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) | #86AFFF | 0.046 |
| Deuteranopia (no green cones) | #70A0FD | 0.032 |
| Tritanopia (no blue cones) | #00BFC9 | 0.116 |
| Achromatopsia (no color) | #A7A7A7 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BABFF
#5BABFF
oklch(72.7% 0.146 251.5)
- #DF9524
#DF9524
oklch(72.7% 0.146 71.4)
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 #5BABFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.058
- Deep Sky Blue #00BFFF ΔE 0.059
- Carolina Blue #8AB8FE ΔE 0.062
- Chefchaouen Blue #4895EF ΔE 0.065
- Periwinkle Blue #8F99FB ΔE 0.066
- Dark Sky Blue #448EE4 ΔE 0.087
- Dodger Blue #1E90FF ΔE 0.087
- Vivid Sky Blue #4CC9F0 ΔE 0.090
Use #5BABFF 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.