#5B9DEC
Closest named color: Cornflower Blue (#6495ED). oklch(68.7% 0.135 254), rgb(91, 157, 236).
Aa
Black text reads best on this color (7.47:1).
About this color
#5B9DEC is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.135 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.022 away. Black text reads best on it, at 7.47:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.47:1 |
| White text | 2.80:1 |
Values
| HEX | #5B9DEC |
| RGB | rgb(91, 157, 236) |
| HSL | hsl(213, 79%, 64%) |
| OKLCH | oklch(68.7% 0.135 254) |
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 #5B9DEC | 2.80:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #5B9DEC | 7.47:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #5B9DEC text on white | 2.80:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #5B9DEC text on black | 7.47:1 | AAA | Lc -48.1 | 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
#C4DBF8
oklch(88.4% 0.047 254.3)
-
Step 300
300
#9BC4F7
oklch(80.9% 0.085 254.2)
-
Step 400
400 (this color)
#5B9DEC
oklch(68.7% 0.135 254)
-
Step 500
500
#2E8AEE
oklch(63.1% 0.172 253.9)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#08417B
oklch(37.6% 0.113 254)
-
Step 950
950
#092748
oklch(27.1% 0.071 253.7)
#5B9DEC 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) | #7BA2EF | 0.038 |
| Deuteranopia (no green cones) | #6894EA | 0.025 |
| Tritanopia (no blue cones) | #00AFBA | 0.110 |
| Achromatopsia (no color) | #9A9A9A | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9DEC
#5B9DEC
oklch(68.7% 0.135 254)
- #CB8C22
#CB8C22
oklch(68.7% 0.135 74.4)
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 #5B9DEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.048
- Soft Blue #6488EA ΔE 0.055
- Periwinkle Blue #8F99FB ΔE 0.065
- Dodger Blue #1E90FF ΔE 0.065
- Perrywinkle #8F8CE7 ΔE 0.069
- Faded Blue #658CBB ΔE 0.077
Use #5B9DEC 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.