#6397E3
Closest named color: Cornflower Blue (#6495ED). oklch(67.3% 0.126 257.8), rgb(99, 151, 227).
Aa
Black text reads best on this color (7.06:1).
About this color
#6397E3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.126 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.017 away. Black text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.06:1 |
| White text | 2.97:1 |
Values
| HEX | #6397E3 |
| RGB | rgb(99, 151, 227) |
| HSL | hsl(216, 70%, 64%) |
| OKLCH | oklch(67.3% 0.126 257.8) |
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 #6397E3 | 2.97:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #6397E3 | 7.06:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #6397E3 text on white | 2.97:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #6397E3 text on black | 7.06:1 | AAA | Lc -45.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF7
oklch(88.6% 0.044 258)
-
Step 300
300
#A1C3F4
oklch(81% 0.079 257.5)
-
Step 400
400 (this color)
#6397E3
oklch(67.3% 0.126 257.8)
-
Step 500
500
#4588E9
oklch(63.1% 0.161 257.9)
-
Step 600
600
#246FD7
oklch(55.5% 0.176 257.9)
-
Step 700
700
#165DBB
oklch(49.2% 0.163 257.7)
-
Step 800
800
#154C97
oklch(42.7% 0.135 257.8)
-
Step 900
900
#194078
oklch(37.6% 0.105 257.9)
-
Step 950
950
#102646
oklch(27% 0.066 257.9)
#6397E3 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) | #789CE6 | 0.029 |
| Deuteranopia (no green cones) | #6890E1 | 0.018 |
| Tritanopia (no blue cones) | #00A8B2 | 0.112 |
| Achromatopsia (no color) | #969696 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6397E3
#6397E3
oklch(67.3% 0.126 257.8)
- #C18B29
#C18B29
oklch(67.4% 0.127 77.6)
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 #6397E3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.017
- Chefchaouen Blue #4895EF ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.041
- Soft Blue #6488EA ΔE 0.043
- Perrywinkle #8F8CE7 ΔE 0.059
- Faded Blue #658CBB ΔE 0.061
- Periwinkle Blue #8F99FB ΔE 0.066
- Dodger Blue #1E90FF ΔE 0.068
Use #6397E3 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.