#6372AC
Closest named color: Dull Blue (#49759C). oklch(56.5% 0.092 272.1), rgb(99, 114, 172).
Aa
White text reads best on this color (4.63:1).
About this color
#6372AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.092 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.044 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #6372AC |
| RGB | rgb(99, 114, 172) |
| HSL | hsl(228, 31%, 53%) |
| OKLCH | oklch(56.5% 0.092 272.1) |
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 #6372AC | 4.63:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #6372AC | 4.53:1 | AA | Lc 32.0 | Non-text elements, placeholder text |
| #6372AC text on white | 4.63:1 | AA | Lc 72.1 | Content text, not long reading |
| #6372AC text on black | 4.53:1 | AA | Lc -29.6 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D4D9E9
oklch(88.6% 0.023 272)
-
Step 300
300
#B7C0DC
oklch(81% 0.041 271.4)
-
Step 400
400
#929FCB
oklch(70.8% 0.066 271.8)
-
Step 500
500
#7786BD
oklch(63% 0.085 272.1)
-
Step 600
600 (this color)
#6372AC
oklch(56.5% 0.092 272.1)
-
Step 700
700
#505D91
oklch(49.1% 0.085 272.3)
-
Step 800
800
#414C76
oklch(42.6% 0.071 271.9)
-
Step 900
900
#37405F
oklch(37.8% 0.055 271.2)
-
Step 950
950
#202538
oklch(26.9% 0.036 272.4)
#6372AC 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) | #5E78AE | 0.017 |
| Deuteranopia (no green cones) | #5872AB | 0.014 |
| Tritanopia (no blue cones) | #4B7E87 | 0.082 |
| Achromatopsia (no color) | #757575 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6372AC
#6372AC
oklch(56.5% 0.092 272.1)
- #89742F
#89742F
oklch(56.5% 0.092 92.2)
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 #6372AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.045
- French Blue #436BAD ΔE 0.046
- Stormy Blue #507B9C ΔE 0.046
- Steel Blue #4682B4 ΔE 0.050
- Off Blue #5684AE ΔE 0.051
- Cerulean #457B9D ΔE 0.052
- Windows Blue #3778BF ΔE 0.052
Use #6372AC 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.