#6583DC
Closest named color: Soft Blue (#6488EA). oklch(62.8% 0.139 268.2), rgb(101, 131, 220).
Aa
Black text reads best on this color (5.83:1).
About this color
#6583DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.139 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.023 away. Black text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.83:1 |
| White text | 3.60:1 |
Values
| HEX | #6583DC |
| RGB | rgb(101, 131, 220) |
| HSL | hsl(225, 63%, 63%) |
| OKLCH | oklch(62.8% 0.139 268.2) |
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 #6583DC | 3.60:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #6583DC | 5.83:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #6583DC text on white | 3.60:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #6583DC text on black | 5.83:1 | AA | Lc -38.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#AEC0ED
oklch(81% 0.067 267.8)
-
Step 400
400
#849EE5
oklch(70.8% 0.108 268.2)
-
Step 500
500 (this color)
#6583DC
oklch(62.8% 0.139 268.2)
-
Step 600
600
#4E6CCB
oklch(55.7% 0.151 268.1)
-
Step 700
700
#3F59AF
oklch(49% 0.14 268.2)
-
Step 800
800
#34498E
oklch(42.6% 0.117 268.4)
-
Step 900
900
#2D3E71
oklch(37.7% 0.09 268)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#6583DC 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) | #5E8DDF | 0.026 |
| Deuteranopia (no green cones) | #5082DA | 0.024 |
| Tritanopia (no blue cones) | #2496A5 | 0.124 |
| Achromatopsia (no color) | #878787 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6583DC
#6583DC
oklch(62.8% 0.139 268.2)
- #A98300
#A98300
oklch(62.9% 0.129 88.1)
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 #6583DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.023
- Dark Sky Blue #448EE4 ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.050
- Cornflower #6A79F7 ΔE 0.051
- Chefchaouen Blue #4895EF ΔE 0.053
- Faded Blue #658CBB ΔE 0.061
- Perrywinkle #8F8CE7 ΔE 0.065
- Cool Blue #4984B8 ΔE 0.066
Use #6583DC 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.