#397AF7
Closest named color: Clear Blue (#247AFD). oklch(60.7% 0.199 261.8), rgb(57, 122, 247).
Aa
Black text reads best on this color (5.30:1).
About this color
#397AF7 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.199 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.015 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #397AF7 |
| RGB | rgb(57, 122, 247) |
| HSL | hsl(219, 92%, 60%) |
| OKLCH | oklch(60.7% 0.199 261.8) |
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 #397AF7 | 3.96:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #397AF7 | 5.30:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #397AF7 text on white | 3.96:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #397AF7 text on black | 5.30:1 | AA | Lc -35.2 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C6DAFE
oklch(88.5% 0.054 262.2)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500 (this color)
#397AF7
oklch(60.7% 0.199 261.8)
-
Step 600
600
#2067EF
oklch(55.6% 0.217 261.8)
-
Step 700
700
#1354D0
oklch(49% 0.202 261.8)
-
Step 800
800
#1346A8
oklch(42.7% 0.167 261.8)
-
Step 900
900
#173C85
oklch(37.6% 0.13 262)
-
Step 950
950
#0E244E
oklch(27% 0.082 261.8)
#397AF7 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) | #2789FB | 0.037 |
| Deuteranopia (no green cones) | #0078F5 | 0.025 |
| Tritanopia (no blue cones) | #0098AD | 0.155 |
| Achromatopsia (no color) | #808080 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397AF7
#397AF7
oklch(60.7% 0.199 261.8)
- #A77900
#A77900
oklch(60.6% 0.125 81.9)
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 #397AF7, closest first.
No curated palette has a color within ΔE 0.04 of #397AF7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.015
- Cerulean Blue #056EEE ΔE 0.044
- Cornflower #6A79F7 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.055
- Neon Blue #4361EE ΔE 0.059
- Bright Blue #0165FC ΔE 0.062
- Soft Blue #6488EA ΔE 0.063
Use #397AF7 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.