#5B70E8
Closest named color: Cornflower (#6A79F7). oklch(59.2% 0.182 272.2), rgb(91, 112, 232).
Aa
Black text reads best on this color (4.92:1).
About this color
#5B70E8 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.182 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.038 away. Black text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #5B70E8 |
| RGB | rgb(91, 112, 232) |
| HSL | hsl(231, 75%, 63%) |
| OKLCH | oklch(59.2% 0.182 272.2) |
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 #5B70E8 | 4.26:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #5B70E8 | 4.92:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #5B70E8 text on white | 4.26:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #5B70E8 text on black | 4.92:1 | AA | Lc -32.5 | 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 600.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#AEBEF6
oklch(80.9% 0.081 272.1)
-
Step 400
400
#859AF2
oklch(70.7% 0.131 272.5)
-
Step 500
500
#687EED
oklch(63% 0.167 272.3)
-
Step 600
600 (this color)
#5B70E8
oklch(59.2% 0.182 272.2)
-
Step 700
700
#4353BF
oklch(49.2% 0.169 272.3)
-
Step 800
800
#37449A
oklch(42.6% 0.14 272.5)
-
Step 900
900
#2F3B7B
oklch(37.8% 0.109 272.2)
-
Step 950
950
#1B2348
oklch(27% 0.069 271.9)
#5B70E8 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) | #2881EC | 0.054 |
| Deuteranopia (no green cones) | #0075E6 | 0.058 |
| Tritanopia (no blue cones) | #008CA1 | 0.156 |
| Achromatopsia (no color) | #7B7B7B | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B70E8
#5B70E8
oklch(59.2% 0.182 272.2)
- #987B00
#987B00
oklch(59.3% 0.121 92.2)
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 #5B70E8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.038
- Royal Blue #4169E1 ΔE 0.038
- Medium Slate Blue #7B68EE ΔE 0.047
- Neon Blue #4361EE ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.051
- Clear Blue #247AFD ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.061
- Soft Blue #6488EA ΔE 0.063
Use #5B70E8 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.