#6397DA
Closest named color: Cornflower Blue (#6495ED). oklch(66.8% 0.115 255.3), rgb(99, 151, 218).
Aa
Black text reads best on this color (6.96:1).
About this color
#6397DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.115 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.030 away. Black text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #6397DA |
| RGB | rgb(99, 151, 218) |
| HSL | hsl(214, 62%, 62%) |
| OKLCH | oklch(66.8% 0.115 255.3) |
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 #6397DA | 3.01:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #6397DA | 6.96:1 | AA | Lc 47.3 | Large or bold text, headings |
| #6397DA text on white | 3.01:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #6397DA text on black | 6.96:1 | AA | Lc -45.1 | 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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E5
oklch(80.9% 0.056 255.2)
-
Step 400
400
#7BA3D8
oklch(70.7% 0.09 255.7)
-
Step 500
500 (this color)
#6397DA
oklch(66.8% 0.115 255.3)
-
Step 600
600
#3D74BB
oklch(55.6% 0.125 255.7)
-
Step 700
700
#2E61A1
oklch(49% 0.117 255.4)
-
Step 800
800
#275082
oklch(42.7% 0.095 254.7)
-
Step 900
900
#254268
oklch(37.6% 0.074 255.8)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#6397DA 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) | #7C9BDD | 0.032 |
| Deuteranopia (no green cones) | #6D8FD9 | 0.023 |
| Tritanopia (no blue cones) | #15A6AF | 0.101 |
| Achromatopsia (no color) | #959595 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6397DA
#6397DA
oklch(66.8% 0.115 255.3)
- #BD8A39
#BD8A39
oklch(66.8% 0.115 75.8)
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 #6397DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.044
- Faded Blue #658CBB ΔE 0.049
- Soft Blue #6488EA ΔE 0.051
- Perrywinkle #8F8CE7 ΔE 0.064
- Greyblue #77A1B5 ΔE 0.072
- Silver Lake Blue #778DA9 ΔE 0.073
Use #6397DA 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.