#4D65B9
Closest named color: French Blue (#436BAD). oklch(53% 0.135 269.4), rgb(77, 101, 185).
Aa
White text reads best on this color (5.41:1).
About this color
#4D65B9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.135 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.029 away. White text reads best on it, at 5.41:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.87:1 |
| White text | 5.41:1 |
Values
| HEX | #4D65B9 |
| RGB | rgb(77, 101, 185) |
| HSL | hsl(227, 44%, 51%) |
| OKLCH | oklch(53% 0.135 269.4) |
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 #4D65B9 | 5.41:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #4D65B9 | 3.87:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #4D65B9 text on white | 5.41:1 | AA | Lc 76.8 | Fine for body text |
| #4D65B9 text on black | 3.87:1 | AA large text | Lc -25.0 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1C0E9
oklch(81% 0.06 269.3)
-
Step 400
400
#889EDE
oklch(70.7% 0.097 269.3)
-
Step 500
500
#6B85D4
oklch(63.1% 0.123 268.9)
-
Step 600
600 (this color)
#4D65B9
oklch(53% 0.135 269.4)
-
Step 700
700
#455AA7
oklch(49% 0.125 269.8)
-
Step 800
800
#384A87
oklch(42.6% 0.104 269.3)
-
Step 900
900
#303E6C
oklch(37.5% 0.081 269.4)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#4D65B9 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) | #3E6FBC | 0.029 |
| Deuteranopia (no green cones) | #2F65B7 | 0.031 |
| Tritanopia (no blue cones) | #007886 | 0.120 |
| Achromatopsia (no color) | #6A6A6A | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D65B9
#4D65B9
oklch(53% 0.135 269.4)
- #856800
#856800
oklch(53.1% 0.109 89.4)
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 #4D65B9, closest first.
No curated palette has a color within ΔE 0.04 of #4D65B9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.029
- Mid Blue #276AB3 ΔE 0.039
- Iris #6258C4 ΔE 0.046
- Windows Blue #3778BF ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.058
- Dusky Blue #475F94 ΔE 0.060
Use #4D65B9 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.