#6375AE
Closest named color: Off Blue (#5684AE). oklch(57.2% 0.091 270), rgb(99, 117, 174).
Aa
Black text reads best on this color (4.68:1).
About this color
#6375AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.091 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.044 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #6375AE |
| RGB | rgb(99, 117, 174) |
| HSL | hsl(226, 32%, 54%) |
| OKLCH | oklch(57.2% 0.091 270) |
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 #6375AE | 4.48:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #6375AE | 4.68:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #6375AE text on white | 4.48:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #6375AE text on black | 4.68:1 | AA | Lc -30.6 | 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
#909FCA
oklch(70.6% 0.065 269.7)
-
Step 500
500
#7687BD
oklch(63.1% 0.084 270.4)
-
Step 600
600 (this color)
#6375AE
oklch(57.2% 0.091 270)
-
Step 700
700
#4E5E91
oklch(49.2% 0.084 269.9)
-
Step 800
800
#404D76
oklch(42.8% 0.07 269.9)
-
Step 900
900
#36405F
oklch(37.7% 0.055 269.9)
-
Step 950
950
#202638
oklch(27.1% 0.035 269.8)
#6375AE 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) | #617AB0 | 0.014 |
| Deuteranopia (no green cones) | #5A74AD | 0.012 |
| Tritanopia (no blue cones) | #49818A | 0.081 |
| Achromatopsia (no color) | #777777 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6375AE
#6375AE
oklch(57.2% 0.091 270)
- #8D7532
#8D7532
oklch(57.1% 0.091 89.5)
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 #6375AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.044
- Steel Blue #4682B4 ΔE 0.044
- Stormy Blue #507B9C ΔE 0.044
- Dull Blue #49759C ΔE 0.044
- Cool Blue #4984B8 ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.049
- Cerulean #457B9D ΔE 0.050
Use #6375AE 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.