#6389CD
Closest named color: Faded Blue (#658CBB). oklch(63.1% 0.112 261.5), rgb(99, 137, 205).
Aa
Black text reads best on this color (5.99:1).
About this color
#6389CD is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.112 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.031 away. Black text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.99:1 |
| White text | 3.50:1 |
Values
| HEX | #6389CD |
| RGB | rgb(99, 137, 205) |
| HSL | hsl(218, 51%, 60%) |
| OKLCH | oklch(63.1% 0.112 261.5) |
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 #6389CD | 3.50:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #6389CD | 5.99:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #6389CD text on white | 3.50:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #6389CD text on black | 5.99:1 | AA | Lc -39.2 | 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
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E5
oklch(81% 0.055 260.6)
-
Step 400
400
#82A1D8
oklch(70.7% 0.088 261.6)
-
Step 500
500 (this color)
#6389CD
oklch(63.1% 0.112 261.5)
-
Step 600
600
#4A72BA
oklch(55.7% 0.121 261.3)
-
Step 700
700
#3B5FA0
oklch(49.1% 0.113 261.3)
-
Step 800
800
#314E82
oklch(42.8% 0.093 261.3)
-
Step 900
900
#2B4168
oklch(37.7% 0.073 261.2)
-
Step 950
950
#1A263D
oklch(27% 0.046 262.7)
#6389CD 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) | #6E8ED0 | 0.020 |
| Deuteranopia (no green cones) | #6284CC | 0.014 |
| Tritanopia (no blue cones) | #2F98A2 | 0.100 |
| Achromatopsia (no color) | #898989 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6389CD
#6389CD
oklch(63.1% 0.112 261.5)
- #AC822D
#AC822D
oklch(63.2% 0.112 81.4)
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 #6389CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.042
- Soft Blue #6488EA ΔE 0.045
- Cool Blue #4984B8 ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.051
- Off Blue #5684AE ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.053
- Steel Blue #4682B4 ΔE 0.053
Use #6389CD 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.