#6583C8
Closest named color: Faded Blue (#658CBB). oklch(61.7% 0.111 265.4), rgb(101, 131, 200).
Aa
Black text reads best on this color (5.63:1).
About this color
#6583C8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.111 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.036 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #6583C8 |
| RGB | rgb(101, 131, 200) |
| HSL | hsl(222, 47%, 59%) |
| OKLCH | oklch(61.7% 0.111 265.4) |
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 #6583C8 | 3.72:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #6583C8 | 5.63:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #6583C8 text on white | 3.72:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #6583C8 text on black | 5.63:1 | AA | Lc -36.9 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B0C1E5
oklch(81% 0.054 265.2)
-
Step 400
400
#87A0D7
oklch(70.8% 0.086 265.4)
-
Step 500
500 (this color)
#6583C8
oklch(61.7% 0.111 265.4)
-
Step 600
600
#5170BA
oklch(55.6% 0.121 265.5)
-
Step 700
700
#425DA0
oklch(49% 0.112 265.9)
-
Step 800
800
#364D82
oklch(42.8% 0.093 265)
-
Step 900
900
#2F4068
oklch(37.7% 0.072 265.6)
-
Step 950
950
#1C263D
oklch(27.1% 0.045 265.6)
#6583C8 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) | #6989CB | 0.018 |
| Deuteranopia (no green cones) | #5E80C6 | 0.013 |
| Tritanopia (no blue cones) | #3A929C | 0.100 |
| Achromatopsia (no color) | #848484 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6583C8
#6583C8
oklch(61.7% 0.111 265.4)
- #A37F28
#A37F28
oklch(61.6% 0.111 85.3)
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 #6583C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.036
- Cool Blue #4984B8 ΔE 0.041
- Off Blue #5684AE ΔE 0.046
- Dusty Blue #5A86AD ΔE 0.047
- Steel Blue #4682B4 ΔE 0.047
- Soft Blue #6488EA ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.052
- Water Blue #0E87CC ΔE 0.060
Use #6583C8 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.