#6399FA
Closest named color: Cornflower Blue (#6495ED). oklch(69% 0.155 261.3), rgb(99, 153, 250).
Aa
Black text reads best on this color (7.46:1).
About this color
#6399FA is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.155 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.020 away. Black text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #6399FA |
| RGB | rgb(99, 153, 250) |
| HSL | hsl(219, 94%, 68%) |
| OKLCH | oklch(69% 0.155 261.3) |
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 #6399FA | 2.81:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #6399FA | 7.46:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #6399FA text on white | 2.81:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #6399FA text on black | 7.46:1 | AAA | Lc -48.0 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400 (this color)
#6399FA
oklch(69% 0.155 261.3)
-
Step 500
500
#3F82FF
oklch(63.1% 0.198 261.5)
-
Step 600
600
#1D68EE
oklch(55.7% 0.215 261.2)
-
Step 700
700
#1055CF
oklch(49.1% 0.2 261.3)
-
Step 800
800
#1147A7
oklch(42.8% 0.164 261.1)
-
Step 900
900
#163D85
oklch(37.8% 0.129 261.3)
-
Step 950
950
#0E244E
oklch(27% 0.082 261.8)
#6399FA 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) | #6FA2FE | 0.028 |
| Deuteranopia (no green cones) | #5A94F8 | 0.017 |
| Tritanopia (no blue cones) | #00AFBD | 0.133 |
| Achromatopsia (no color) | #9A9A9A | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6399FA
#6399FA
oklch(69% 0.155 261.3)
- #C79000
#C79000
oklch(68.9% 0.142 81.3)
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 #6399FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.020
- Chefchaouen Blue #4895EF ΔE 0.033
- Soft Blue #6488EA ΔE 0.046
- Periwinkle Blue #8F99FB ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.061
Use #6399FA 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.