#6374AE
Closest named color: Dull Blue (#49759C). oklch(57% 0.092 270.8), rgb(99, 116, 174).
Aa
Black text reads best on this color (4.63:1).
About this color
#6374AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.092 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.045 away. Black text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.63:1 |
| White text | 4.52:1 |
Values
| HEX | #6374AE |
| RGB | rgb(99, 116, 174) |
| HSL | hsl(226, 32%, 54%) |
| OKLCH | oklch(57% 0.092 270.8) |
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 #6374AE | 4.52:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #6374AE | 4.63:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #6374AE text on white | 4.52:1 | AA | Lc 71.4 | Content text, not long reading |
| #6374AE text on black | 4.63:1 | AA | Lc -30.3 | 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 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
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B6C0DC
oklch(80.9% 0.041 269.9)
-
Step 400
400
#919FCB
oklch(70.7% 0.067 270.9)
-
Step 500
500
#7687BD
oklch(63.1% 0.084 270.4)
-
Step 600
600 (this color)
#6374AE
oklch(57% 0.092 270.8)
-
Step 700
700
#4F5D92
oklch(49.1% 0.087 271.6)
-
Step 800
800
#404C76
oklch(42.6% 0.072 271)
-
Step 900
900
#36405F
oklch(37.7% 0.055 269.9)
-
Step 950
950
#202638
oklch(27.1% 0.035 269.8)
#6374AE 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) | #607AB0 | 0.016 |
| Deuteranopia (no green cones) | #5973AD | 0.014 |
| Tritanopia (no blue cones) | #4A8089 | 0.083 |
| Achromatopsia (no color) | #767676 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6374AE
#6374AE
oklch(57% 0.092 270.8)
- #8C7530
#8C7530
oklch(57% 0.092 90.7)
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 #6374AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.045
- Stormy Blue #507B9C ΔE 0.045
- Steel Blue #4682B4 ΔE 0.046
- Off Blue #5684AE ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.048
- French Blue #436BAD ΔE 0.049
- Windows Blue #3778BF ΔE 0.050
Use #6374AE 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.