#6390AA
Closest named color: Blue Grey (#758DA3). oklch(63.1% 0.063 234.5), rgb(99, 144, 170).
Aa
Black text reads best on this color (6.10:1).
About this color
#6390AA is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.063 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.022 away. Black text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.10:1 |
| White text | 3.44:1 |
Values
| HEX | #6390AA |
| RGB | rgb(99, 144, 170) |
| HSL | hsl(202, 29%, 53%) |
| OKLCH | oklch(63.1% 0.063 234.5) |
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 #6390AA | 3.44:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #6390AA | 6.10:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #6390AA text on white | 3.44:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #6390AA text on black | 6.10:1 | AA | Lc -39.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AEC4D2
oklch(80.8% 0.031 235.7)
-
Step 400
400
#83A6BB
oklch(70.6% 0.049 234.7)
-
Step 500
500 (this color)
#6390AA
oklch(63.1% 0.063 234.5)
-
Step 600
600
#497A96
oklch(55.6% 0.069 234.9)
-
Step 700
700
#3A677F
oklch(49.2% 0.063 233.3)
-
Step 800
800
#305468
oklch(42.7% 0.053 234.2)
-
Step 900
900
#2B4554
oklch(37.6% 0.041 234.7)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#6390AA 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) | #848FAB | 0.041 |
| Deuteranopia (no green cones) | #7A87AA | 0.036 |
| Tritanopia (no blue cones) | #479798 | 0.048 |
| Achromatopsia (no color) | #8A8A8A | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6390AA
#6390AA
oklch(63.1% 0.063 234.5)
- #A88065
#A88065
oklch(63.2% 0.063 55.3)
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 #6390AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.022
- Silver Lake Blue #778DA9 ΔE 0.024
- Faded Blue #658CBB ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.034
- Light Slate Gray #778899 ΔE 0.034
- Steel #738595 ΔE 0.039
- Off Blue #5684AE ΔE 0.041
- Cadet Blue #5F9EA0 ΔE 0.048
Use #6390AA 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.