#5B9DE9
Closest named color: Cornflower Blue (#6495ED). oklch(68.5% 0.132 253.2), rgb(91, 157, 233).
Aa
Black text reads best on this color (7.44:1).
About this color
#5B9DE9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.132 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.024 away. Black text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.44:1 |
| White text | 2.82:1 |
Values
| HEX | #5B9DE9 |
| RGB | rgb(91, 157, 233) |
| HSL | hsl(212, 76%, 64%) |
| OKLCH | oklch(68.5% 0.132 253.2) |
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 #5B9DE9 | 2.82:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #5B9DE9 | 7.44:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #5B9DE9 text on white | 2.82:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #5B9DE9 text on black | 7.44:1 | AAA | Lc -47.9 | 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
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DCF7
oklch(88.6% 0.045 252.5)
-
Step 300
300
#9BC4F5
oklch(80.8% 0.082 253.2)
-
Step 400
400 (this color)
#5B9DE9
oklch(68.5% 0.132 253.2)
-
Step 500
500
#2F8BEB
oklch(63.2% 0.167 253)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004F95
oklch(42.8% 0.133 253.1)
-
Step 900
900
#08427A
oklch(37.8% 0.11 253.1)
-
Step 950
950
#092747
oklch(27% 0.069 253.1)
#5B9DE9 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) | #7DA1EC | 0.039 |
| Deuteranopia (no green cones) | #6A94E7 | 0.026 |
| Tritanopia (no blue cones) | #00AEB8 | 0.108 |
| Achromatopsia (no color) | #9A9A9A | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9DE9
#5B9DE9
oklch(68.5% 0.132 253.2)
- #CA8B29
#CA8B29
oklch(68.4% 0.132 73.1)
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 #5B9DE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.024
- Chefchaouen Blue #4895EF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.048
- Soft Blue #6488EA ΔE 0.056
- Periwinkle Blue #8F99FB ΔE 0.067
- Dodger Blue #1E90FF ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.070
- Faded Blue #658CBB ΔE 0.073
Use #5B9DE9 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.