#5B6CFE
Closest named color: Cornflower (#6A79F7). oklch(60.1% 0.215 273), rgb(91, 108, 254).
Aa
Black text reads best on this color (5.02:1).
About this color
#5B6CFE is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.215 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.040 away. Black text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.02:1 |
| White text | 4.18:1 |
Values
| HEX | #5B6CFE |
| RGB | rgb(91, 108, 254) |
| HSL | hsl(234, 99%, 68%) |
| OKLCH | oklch(60.1% 0.215 273) |
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 #5B6CFE | 4.18:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #5B6CFE | 5.02:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #5B6CFE text on white | 4.18:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #5B6CFE text on black | 5.02:1 | AA | Lc -33.3 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CCD7FF
oklch(88.4% 0.057 273.1)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8298FF
oklch(70.8% 0.152 272.8)
-
Step 500
500 (this color)
#5B6CFE
oklch(60.1% 0.215 273)
-
Step 600
600
#4E59F9
oklch(55.7% 0.234 273)
-
Step 700
700
#4047D9
oklch(49.2% 0.218 273)
-
Step 800
800
#343CAF
oklch(42.8% 0.18 272.9)
-
Step 900
900
#2C358A
oklch(37.6% 0.14 273)
-
Step 950
950
#192051
oklch(26.9% 0.089 272.8)
#5B6CFE 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) | #0083FF | 0.069 |
| Deuteranopia (no green cones) | #0075FB | 0.058 |
| Tritanopia (no blue cones) | #0090AB | 0.179 |
| Achromatopsia (no color) | #7C7C7C | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6CFE
#5B6CFE
oklch(60.1% 0.215 273)
- #9A7E00
#9A7E00
oklch(60.2% 0.123 93.2)
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 #5B6CFE, closest first.
No curated palette has a color within ΔE 0.04 of #5B6CFE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.040
- Neon Blue #4361EE ΔE 0.047
- Medium Slate Blue #7B68EE ΔE 0.049
- Clear Blue #247AFD ΔE 0.051
- Royal Blue #4169E1 ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.065
- Bright Blue #0165FC ΔE 0.068
- Dark Periwinkle #665FD1 ΔE 0.073
Use #5B6CFE 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.