#648FC6
Closest named color: Faded Blue (#658CBB). oklch(64.1% 0.096 255), rgb(100, 143, 198).
Aa
Black text reads best on this color (6.28:1).
About this color
#648FC6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.096 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.017 away. Black text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.28:1 |
| White text | 3.34:1 |
Values
| HEX | #648FC6 |
| RGB | rgb(100, 143, 198) |
| HSL | hsl(214, 46%, 58%) |
| OKLCH | oklch(64.1% 0.096 255) |
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 #648FC6 | 3.34:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #648FC6 | 6.28:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #648FC6 text on white | 3.34:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #648FC6 text on black | 6.28:1 | AA | Lc -41.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC3DF
oklch(81% 0.046 254.5)
-
Step 400
400
#81A3CF
oklch(70.7% 0.075 255.1)
-
Step 500
500 (this color)
#648FC6
oklch(64.1% 0.096 255)
-
Step 600
600
#4775AF
oklch(55.6% 0.104 255)
-
Step 700
700
#386296
oklch(49% 0.096 254.7)
-
Step 800
800
#2F507A
oklch(42.6% 0.08 255.1)
-
Step 900
900
#2A4362
oklch(37.8% 0.062 254.4)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#648FC6 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) | #7992C8 | 0.028 |
| Deuteranopia (no green cones) | #6E88C5 | 0.021 |
| Tritanopia (no blue cones) | #379BA2 | 0.084 |
| Achromatopsia (no color) | #8D8D8D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648FC6
#648FC6
oklch(64.1% 0.096 255)
- #AF8445
#AF8445
oklch(64.2% 0.096 75.1)
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 #648FC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.047
- Off Blue #5684AE ΔE 0.048
- Cool Blue #4984B8 ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.053
- Blue Grey #758DA3 ΔE 0.054
- Steel Blue #4682B4 ΔE 0.056
Use #648FC6 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.