#5B6CF6
Closest named color: Cornflower (#6A79F7). oklch(59.5% 0.205 273.2), rgb(91, 108, 246).
Aa
Black text reads best on this color (4.92:1).
About this color
#5B6CF6 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.205 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.039 away. Black text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #5B6CF6 |
| RGB | rgb(91, 108, 246) |
| HSL | hsl(233, 90%, 66%) |
| OKLCH | oklch(59.5% 0.205 273.2) |
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 #5B6CF6 | 4.26:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #5B6CF6 | 4.92:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #5B6CF6 text on white | 4.26:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #5B6CF6 text on black | 4.92:1 | AA | Lc -32.6 | 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
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8297FF
oklch(70.6% 0.154 273.2)
-
Step 500
500 (this color)
#5B6CF6
oklch(59.5% 0.205 273.2)
-
Step 600
600
#4F5BF2
oklch(55.5% 0.223 273.1)
-
Step 700
700
#414AD3
oklch(49.2% 0.207 273.1)
-
Step 800
800
#353EAB
oklch(42.8% 0.172 273)
-
Step 900
900
#2D3687
oklch(37.6% 0.134 273.3)
-
Step 950
950
#1A214F
oklch(27.1% 0.084 273)
#5B6CF6 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) | #0081FB | 0.066 |
| Deuteranopia (no green cones) | #0074F3 | 0.059 |
| Tritanopia (no blue cones) | #008DA7 | 0.171 |
| Achromatopsia (no color) | #7A7A7A | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6CF6
#5B6CF6
oklch(59.5% 0.205 273.2)
- #987C00
#987C00
oklch(59.6% 0.122 93)
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 #5B6CF6, closest first.
No curated palette has a color within ΔE 0.04 of #5B6CF6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.039
- Neon Blue #4361EE ΔE 0.043
- Royal Blue #4169E1 ΔE 0.045
- Medium Slate Blue #7B68EE ΔE 0.045
- Clear Blue #247AFD ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.062
- Bright Blue #0165FC ΔE 0.068
Use #5B6CF6 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.