#6375A2
Closest named color: Stormy Blue (#507B9C). oklch(56.6% 0.073 267.3), rgb(99, 117, 162).
Aa
Black text reads best on this color (4.59:1).
About this color
#6375A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.073 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.031 away. Black text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #6375A2 |
| RGB | rgb(99, 117, 162) |
| HSL | hsl(223, 25%, 51%) |
| OKLCH | oklch(56.6% 0.073 267.3) |
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 #6375A2 | 4.56:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #6375A2 | 4.59:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #6375A2 text on white | 4.56:1 | AA | Lc 71.7 | Content text, not long reading |
| #6375A2 text on black | 4.59:1 | AA | Lc -30.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B7C0D7
oklch(80.8% 0.034 268.6)
-
Step 400
400
#92A0C2
oklch(70.7% 0.052 267.5)
-
Step 500
500
#7789B3
oklch(63.2% 0.067 266.5)
-
Step 600
600 (this color)
#6375A2
oklch(56.6% 0.073 267.3)
-
Step 700
700
#4F5F88
oklch(49% 0.069 267.5)
-
Step 800
800
#414E6E
oklch(42.7% 0.056 267)
-
Step 900
900
#374159
oklch(37.7% 0.043 266.8)
-
Step 950
950
#202634
oklch(26.9% 0.028 266.5)
#6375A2 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) | #6679A4 | 0.012 |
| Deuteranopia (no green cones) | #6073A1 | 0.007 |
| Tritanopia (no blue cones) | #4F7E85 | 0.065 |
| Achromatopsia (no color) | #767676 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6375A2
#6375A2
oklch(56.6% 0.073 267.3)
- #897442
#897442
oklch(56.7% 0.073 87.3)
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 #6375A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.031
- Dull Blue #49759C ΔE 0.034
- Cerulean #457B9D ΔE 0.039
- Metallic Blue #4F738E ΔE 0.042
- Off Blue #5684AE ΔE 0.042
- Grey Blue #647D8E ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.047
Use #6375A2 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.