#5B8EFC
Closest named color: Soft Blue (#6488EA). oklch(66.4% 0.172 263.7), rgb(91, 142, 252).
Aa
Black text reads best on this color (6.71:1).
About this color
#5B8EFC is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.172 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.029 away. Black text reads best on it, at 6.71:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #5B8EFC |
| RGB | rgb(91, 142, 252) |
| HSL | hsl(221, 96%, 67%) |
| OKLCH | oklch(66.4% 0.172 263.7) |
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 #5B8EFC | 3.12:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #5B8EFC | 6.71:1 | AA | Lc 46.1 | Large or bold text, headings |
| #5B8EFC text on white | 3.12:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #5B8EFC text on black | 6.71:1 | AA | Lc -43.8 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A5C1F8
oklch(81% 0.084 263.6)
-
Step 400
400
#759EF4
oklch(70.6% 0.134 263.9)
-
Step 500
500 (this color)
#5B8EFC
oklch(66.4% 0.172 263.7)
-
Step 600
600
#376ADF
oklch(55.6% 0.187 263.7)
-
Step 700
700
#2A57C2
oklch(49.1% 0.175 263.9)
-
Step 800
800
#23489D
oklch(42.7% 0.145 263.7)
-
Step 900
900
#213D7C
oklch(37.6% 0.112 263.8)
-
Step 950
950
#142549
oklch(27.2% 0.071 263.4)
#5B8EFC 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) | #5A9AFF | 0.031 |
| Deuteranopia (no green cones) | #3F8BFA | 0.027 |
| Tritanopia (no blue cones) | #00A7B9 | 0.143 |
| Achromatopsia (no color) | #929292 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8EFC
#5B8EFC
oklch(66.4% 0.172 263.7)
- #BB8B00
#BB8B00
oklch(66.5% 0.137 84)
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 #5B8EFC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.029
- Chefchaouen Blue #4895EF ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.043
- Cornflower #6A79F7 ΔE 0.052
- Lavender Blue #8B88F8 ΔE 0.057
- Periwinkle #8E82FE ΔE 0.066
Use #5B8EFC 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.