#5B8AFB
Closest named color: Soft Blue (#6488EA). oklch(65.6% 0.176 265), rgb(91, 138, 251).
Aa
Black text reads best on this color (6.47:1).
About this color
#5B8AFB is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.176 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.026 away. Black text reads best on it, at 6.47:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.47:1 |
| White text | 3.24:1 |
Values
| HEX | #5B8AFB |
| RGB | rgb(91, 138, 251) |
| HSL | hsl(222, 95%, 67%) |
| OKLCH | oklch(65.6% 0.176 265) |
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 #5B8AFB | 3.24:1 | AA large text | Lc -64.9 | Content text, not long reading |
| Black text on #5B8AFB | 6.47:1 | AA | Lc 44.6 | Non-text elements, placeholder text |
| #5B8AFB text on white | 3.24:1 | AA large text | Lc 59.4 | Large or bold text, headings |
| #5B8AFB text on black | 6.47:1 | AA | Lc -42.3 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#769DF6
oklch(70.6% 0.138 265.1)
-
Step 500
500 (this color)
#5B8AFB
oklch(65.6% 0.176 265)
-
Step 600
600
#3A68E1
oklch(55.5% 0.191 265)
-
Step 700
700
#2D56C4
oklch(49.1% 0.178 265)
-
Step 800
800
#26479E
oklch(42.7% 0.147 265)
-
Step 900
900
#233D7E
oklch(37.8% 0.115 265)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#5B8AFB 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) | #5397FF | 0.033 |
| Deuteranopia (no green cones) | #3688F9 | 0.032 |
| Tritanopia (no blue cones) | #00A4B6 | 0.147 |
| Achromatopsia (no color) | #8F8F8F | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8AFB
#5B8AFB
oklch(65.6% 0.176 265)
- #B68900
#B68900
oklch(65.6% 0.134 85.2)
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 #5B8AFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.039
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.040
- Cornflower #6A79F7 ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.044
- Lavender Blue #8B88F8 ΔE 0.058
- Clear Blue #247AFD ΔE 0.064
Use #5B8AFB 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.