#6491DF
Closest named color: Cornflower Blue (#6495ED). oklch(65.9% 0.127 260.8), rgb(100, 145, 223).
Aa
Black text reads best on this color (6.65:1).
About this color
#6491DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.127 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.022 away. Black text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.65:1 |
| White text | 3.15:1 |
Values
| HEX | #6491DF |
| RGB | rgb(100, 145, 223) |
| HSL | hsl(218, 66%, 63%) |
| OKLCH | oklch(65.9% 0.127 260.8) |
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 #6491DF | 3.15:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #6491DF | 6.65:1 | AA | Lc 45.6 | Large or bold text, headings |
| #6491DF text on white | 3.15:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #6491DF text on black | 6.65:1 | AA | Lc -43.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF1
oklch(88.5% 0.035 260.4)
-
Step 300
300
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7DA1DF
oklch(70.7% 0.1 261)
-
Step 500
500 (this color)
#6491DF
oklch(65.9% 0.127 260.8)
-
Step 600
600
#4271C3
oklch(55.6% 0.138 260.7)
-
Step 700
700
#345EA8
oklch(49% 0.128 260.8)
-
Step 800
800
#2B4D88
oklch(42.6% 0.106 260.6)
-
Step 900
900
#27416D
oklch(37.8% 0.082 260.3)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#6491DF 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) | #7197E2 | 0.023 |
| Deuteranopia (no green cones) | #628CDD | 0.014 |
| Tritanopia (no blue cones) | #13A2AE | 0.113 |
| Achromatopsia (no color) | #919191 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6491DF
#6491DF
oklch(65.9% 0.127 260.8)
- #B9881F
#B9881F
oklch(65.8% 0.127 80.9)
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 #6491DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.022
- Soft Blue #6488EA ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.033
- Faded Blue #658CBB ΔE 0.053
- Perrywinkle #8F8CE7 ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.067
- Lavender Blue #8B88F8 ΔE 0.067
Use #6491DF 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.