#5B8BE4
Closest named color: Soft Blue (#6488EA). oklch(64.4% 0.144 261.8), rgb(91, 139, 228).
Aa
Black text reads best on this color (6.25:1).
About this color
#5B8BE4 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.144 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.016 away. Black text reads best on it, at 6.25:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.25:1 |
| White text | 3.35:1 |
Values
| HEX | #5B8BE4 |
| RGB | rgb(91, 139, 228) |
| HSL | hsl(219, 72%, 63%) |
| OKLCH | oklch(64.4% 0.144 261.8) |
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 #5B8BE4 | 3.35:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #5B8BE4 | 6.25:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #5B8BE4 text on white | 3.35:1 | AA large text | Lc 60.8 | Content text, not long reading |
| #5B8BE4 text on black | 6.25:1 | AA | Lc -40.9 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A8C1EF
oklch(80.8% 0.071 262.5)
-
Step 400
400
#79A0E7
oklch(70.6% 0.113 261.9)
-
Step 500
500 (this color)
#5B8BE4
oklch(64.4% 0.144 261.8)
-
Step 600
600
#3D6FCD
oklch(55.6% 0.155 261.7)
-
Step 700
700
#2F5CB2
oklch(49.1% 0.146 261.8)
-
Step 800
800
#284C90
oklch(42.8% 0.12 261.7)
-
Step 900
900
#244073
oklch(37.8% 0.094 261.4)
-
Step 950
950
#162643
oklch(27.1% 0.058 261.5)
#5B8BE4 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) | #6493E8 | 0.025 |
| Deuteranopia (no green cones) | #5286E2 | 0.017 |
| Tritanopia (no blue cones) | #009FAC | 0.124 |
| Achromatopsia (no color) | #8C8C8C | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8BE4
#5B8BE4
oklch(64.4% 0.144 261.8)
- #B58400
#B58400
oklch(64.4% 0.133 82.3)
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 #5B8BE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.016
- Dark Sky Blue #448EE4 ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.053
- Cornflower #6A79F7 ΔE 0.058
- Faded Blue #658CBB ΔE 0.064
- Water Blue #0E87CC ΔE 0.065
Use #5B8BE4 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.