#4B6BC5
Closest named color: French Blue (#436BAD). oklch(54.9% 0.145 266.9), rgb(75, 107, 197).
Aa
White text reads best on this color (4.98:1).
About this color
#4B6BC5 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.145 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.040 away. White text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.20:1 |
| White text | 4.98:1 |
Values
| HEX | #4B6BC5 |
| RGB | rgb(75, 107, 197) |
| HSL | hsl(224, 51%, 53%) |
| OKLCH | oklch(54.9% 0.145 266.9) |
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 #4B6BC5 | 4.98:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #4B6BC5 | 4.20:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #4B6BC5 text on white | 4.98:1 | AA | Lc 74.3 | Content text, not long reading |
| #4B6BC5 text on black | 4.20:1 | AA large text | Lc -27.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#AEC0EC
oklch(80.9% 0.066 267.5)
-
Step 400
400
#839FE2
oklch(70.8% 0.104 266.4)
-
Step 500
500
#6585DA
oklch(63.1% 0.133 267)
-
Step 600
600 (this color)
#4B6BC5
oklch(54.9% 0.145 266.9)
-
Step 700
700
#3E5BAC
oklch(49.2% 0.134 266.7)
-
Step 800
800
#334A8B
oklch(42.6% 0.111 267)
-
Step 900
900
#2D3F6F
oklch(37.8% 0.085 266.8)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#4B6BC5 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) | #4075C8 | 0.027 |
| Deuteranopia (no green cones) | #2C6AC3 | 0.030 |
| Tritanopia (no blue cones) | #007F8E | 0.123 |
| Achromatopsia (no color) | #6F6F6F | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B6BC5
#4B6BC5
oklch(54.9% 0.145 266.9)
- #8E6C00
#8E6C00
oklch(55% 0.113 86.7)
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 #4B6BC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.040
- Windows Blue #3778BF ΔE 0.040
- Royal Blue #4169E1 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.049
- Iris #6258C4 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.058
Use #4B6BC5 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.