#5B8CEB
Closest named color: Soft Blue (#6488EA). oklch(65% 0.152 262.4), rgb(91, 140, 235).
Aa
Black text reads best on this color (6.39:1).
About this color
#5B8CEB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.152 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.013 away. Black text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #5B8CEB |
| RGB | rgb(91, 140, 235) |
| HSL | hsl(220, 78%, 64%) |
| OKLCH | oklch(65% 0.152 262.4) |
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 #5B8CEB | 3.28:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #5B8CEB | 6.39:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #5B8CEB text on white | 3.28:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #5B8CEB text on black | 6.39:1 | AA | Lc -41.8 | 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
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A7C1F1
oklch(80.8% 0.074 262.5)
-
Step 400
400
#78A0EB
oklch(70.8% 0.119 262.3)
-
Step 500
500 (this color)
#5B8CEB
oklch(65% 0.152 262.4)
-
Step 600
600
#3B6ED2
oklch(55.7% 0.164 262.2)
-
Step 700
700
#2D5BB6
oklch(49.1% 0.153 262.2)
-
Step 800
800
#264B94
oklch(42.8% 0.128 262.2)
-
Step 900
900
#233F76
oklch(37.7% 0.1 262.3)
-
Step 950
950
#152545
oklch(26.9% 0.064 262.8)
#5B8CEB 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) | #6295EF | 0.026 |
| Deuteranopia (no green cones) | #4D88E9 | 0.019 |
| Tritanopia (no blue cones) | #00A1B0 | 0.128 |
| Achromatopsia (no color) | #8E8E8E | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8CEB
#5B8CEB
oklch(65% 0.152 262.4)
- #B78600
#B78600
oklch(65.1% 0.134 82.6)
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 #5B8CEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.013
- Dark Sky Blue #448EE4 ΔE 0.024
- Chefchaouen Blue #4895EF ΔE 0.026
- Cornflower Blue #6495ED ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.047
- Cornflower #6A79F7 ΔE 0.054
- Lavender Blue #8B88F8 ΔE 0.063
- Perrywinkle #8F8CE7 ΔE 0.064
Use #5B8CEB 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.