#5370F7
Closest named color: Cornflower (#6A79F7). oklch(59.8% 0.204 270), rgb(83, 112, 247).
Aa
Black text reads best on this color (5.02:1).
About this color
#5370F7 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.204 and its hue 270°. 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 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #5370F7 |
| RGB | rgb(83, 112, 247) |
| HSL | hsl(229, 91%, 65%) |
| OKLCH | oklch(59.8% 0.204 270) |
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 #5370F7 | 4.17:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #5370F7 | 5.02:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #5370F7 text on white | 4.17:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #5370F7 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
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500 (this color)
#5370F7
oklch(59.8% 0.204 270)
-
Step 600
600
#455FF2
oklch(55.7% 0.221 269.9)
-
Step 700
700
#384DD3
oklch(49.2% 0.206 270)
-
Step 800
800
#2E40AA
oklch(42.7% 0.17 270.1)
-
Step 900
900
#283887
oklch(37.7% 0.133 270.1)
-
Step 950
950
#17224F
oklch(27.1% 0.084 269.7)
#5370F7 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) | #0084FC | 0.059 |
| Deuteranopia (no green cones) | #0075F4 | 0.048 |
| Tritanopia (no blue cones) | #0091A9 | 0.168 |
| Achromatopsia (no color) | #7C7C7C | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5370F7
#5370F7
oklch(59.8% 0.204 270)
- #9C7B00
#9C7B00
oklch(59.8% 0.122 89.8)
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 #5370F7, closest first.
No curated palette has a color within ΔE 0.04 of #5370F7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.038
- Clear Blue #247AFD ΔE 0.040
- Royal Blue #4169E1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.054
- Medium Slate Blue #7B68EE ΔE 0.055
- Bright Blue #0165FC ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.069
Use #5370F7 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.