#5B74DF
Closest named color: Cornflower (#6A79F7). oklch(59.4% 0.164 270.8), rgb(91, 116, 223).
Aa
Black text reads best on this color (5.00:1).
About this color
#5B74DF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.164 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.043 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #5B74DF |
| RGB | rgb(91, 116, 223) |
| HSL | hsl(229, 67%, 62%) |
| OKLCH | oklch(59.4% 0.164 270.8) |
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 #5B74DF | 4.19:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #5B74DF | 5.00:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #5B74DF text on white | 4.19:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #5B74DF text on black | 5.00:1 | AA | Lc -33.0 | 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
#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
#ADBEF5
oklch(80.8% 0.08 271.2)
-
Step 400
400
#839BF1
oklch(70.7% 0.129 271)
-
Step 500
500 (this color)
#5B74DF
oklch(59.4% 0.164 270.8)
-
Step 600
600
#4E66DA
oklch(55.5% 0.179 270.7)
-
Step 700
700
#4054BD
oklch(49.1% 0.166 270.9)
-
Step 800
800
#344599
oklch(42.6% 0.138 270.8)
-
Step 900
900
#2D3B7A
oklch(37.6% 0.108 271)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#5B74DF 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) | #3E82E3 | 0.041 |
| Deuteranopia (no green cones) | #2776DD | 0.046 |
| Tritanopia (no blue cones) | #008C9F | 0.143 |
| Achromatopsia (no color) | #7C7C7C | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B74DF
#5B74DF
oklch(59.4% 0.164 270.8)
- #9A7A00
#9A7A00
oklch(59.3% 0.121 90.3)
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 #5B74DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.043
- Royal Blue #4169E1 ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.053
- Soft Blue #6488EA ΔE 0.055
- Medium Slate Blue #7B68EE ΔE 0.055
- Clear Blue #247AFD ΔE 0.061
- Neon Blue #4361EE ΔE 0.063
- Windows Blue #3778BF ΔE 0.065
Use #5B74DF 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.