#6491F4
Closest named color: Cornflower Blue (#6495ED). oklch(67% 0.155 264.2), rgb(100, 145, 244).
Aa
Black text reads best on this color (6.89:1).
About this color
#6491F4 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.155 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.016 away. Black text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.89:1 |
| White text | 3.04:1 |
Values
| HEX | #6491F4 |
| RGB | rgb(100, 145, 244) |
| HSL | hsl(221, 87%, 67%) |
| OKLCH | oklch(67% 0.155 264.2) |
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 #6491F4 | 3.04:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #6491F4 | 6.89:1 | AA | Lc 47.0 | Large or bold text, headings |
| #6491F4 text on white | 3.04:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #6491F4 text on black | 6.89:1 | AA | Lc -44.7 | 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 400.
-
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
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400 (this color)
#6491F4
oklch(67% 0.155 264.2)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#2F65EF
oklch(55.6% 0.216 264.2)
-
Step 700
700
#2353D0
oklch(49.2% 0.2 264.2)
-
Step 800
800
#1E45A8
oklch(42.8% 0.165 264.2)
-
Step 900
900
#1D3B85
oklch(37.7% 0.13 264.4)
-
Step 950
950
#11234E
oklch(26.9% 0.083 264.4)
#6491F4 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) | #669BF8 | 0.026 |
| Deuteranopia (no green cones) | #528EF2 | 0.021 |
| Tritanopia (no blue cones) | #00A7B7 | 0.134 |
| Achromatopsia (no color) | #949494 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6491F4
#6491F4
oklch(67% 0.155 264.2)
- #BD8D00
#BD8D00
oklch(67.1% 0.138 84.3)
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 #6491F4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.016
- Soft Blue #6488EA ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.041
- Dodger Blue #1E90FF ΔE 0.051
- Lavender Blue #8B88F8 ΔE 0.051
- Perrywinkle #8F8CE7 ΔE 0.055
- Periwinkle Blue #8F99FB ΔE 0.059
Use #6491F4 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.