#5E73B2
Closest named color: Flat Blue (#3C73A8). oklch(56.6% 0.101 269), rgb(94, 115, 178).
Aa
White text reads best on this color (4.59:1).
About this color
#5E73B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.101 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.042 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #5E73B2 |
| RGB | rgb(94, 115, 178) |
| HSL | hsl(225, 35%, 53%) |
| OKLCH | oklch(56.6% 0.101 269) |
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 #5E73B2 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #5E73B2 | 4.57:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #5E73B2 text on white | 4.59:1 | AA | Lc 71.8 | Content text, not long reading |
| #5E73B2 text on black | 4.57:1 | AA | Lc -29.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C0DF
oklch(80.9% 0.046 268.6)
-
Step 400
400
#8E9FCF
oklch(70.7% 0.073 269.4)
-
Step 500
500
#7287C2
oklch(63.1% 0.093 268.7)
-
Step 600
600 (this color)
#5E73B2
oklch(56.6% 0.101 269)
-
Step 700
700
#4B5D96
oklch(49% 0.094 269.4)
-
Step 800
800
#3D4C7A
oklch(42.6% 0.079 269.2)
-
Step 900
900
#344062
oklch(37.7% 0.061 268.6)
-
Step 950
950
#1F2639
oklch(27.1% 0.037 268.4)
#5E73B2 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) | #5C79B5 | 0.016 |
| Deuteranopia (no green cones) | #5372B1 | 0.014 |
| Tritanopia (no blue cones) | #3E808A | 0.090 |
| Achromatopsia (no color) | #757575 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5E73B2
#5E73B2
oklch(56.6% 0.101 269)
- #8E7323
#8E7323
oklch(56.7% 0.101 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 #5E73B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.042
- French Blue #436BAD ΔE 0.042
- Windows Blue #3778BF ΔE 0.043
- Dull Blue #49759C ΔE 0.046
- Steel Blue #4682B4 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.049
- Stormy Blue #507B9C ΔE 0.049
- Off Blue #5684AE ΔE 0.050
Use #5E73B2 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.