#5372A7
Closest named color: Flat Blue (#3C73A8). oklch(55.1% 0.091 260.7), rgb(83, 114, 167).
Aa
White text reads best on this color (4.84:1).
About this color
#5372A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.091 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.024 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #5372A7 |
| RGB | rgb(83, 114, 167) |
| HSL | hsl(218, 34%, 49%) |
| OKLCH | oklch(55.1% 0.091 260.7) |
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 #5372A7 | 4.84:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #5372A7 | 4.33:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #5372A7 text on white | 4.84:1 | AA | Lc 73.5 | Content text, not long reading |
| #5372A7 text on black | 4.33:1 | AA large text | Lc -28.2 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C2DC
oklch(81% 0.041 260.1)
-
Step 400
400
#8AA2CA
oklch(70.8% 0.065 260.5)
-
Step 500
500
#6C8ABC
oklch(63.1% 0.083 260.4)
-
Step 600
600 (this color)
#5372A7
oklch(55.1% 0.091 260.7)
-
Step 700
700
#456191
oklch(49.2% 0.084 260.7)
-
Step 800
800
#394F75
oklch(42.7% 0.069 260.9)
-
Step 900
900
#31425F
oklch(37.8% 0.055 260.8)
-
Step 950
950
#1D2737
oklch(27.1% 0.033 259.6)
#5372A7 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) | #5E76A9 | 0.019 |
| Deuteranopia (no green cones) | #546EA6 | 0.011 |
| Tritanopia (no blue cones) | #2D7E85 | 0.082 |
| Achromatopsia (no color) | #717171 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5372A7
#5372A7
oklch(55.1% 0.091 260.7)
- #8D6C2D
#8D6C2D
oklch(55.2% 0.09 81)
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 #5372A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.024
- Dull Blue #49759C ΔE 0.025
- Muted Blue #3B719F ΔE 0.030
- French Blue #436BAD ΔE 0.032
- Stormy Blue #507B9C ΔE 0.035
- Cerulean #457B9D ΔE 0.036
- Metallic Blue #4F738E ΔE 0.042
- Windows Blue #3778BF ΔE 0.043
Use #5372A7 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.