#4661B3
Closest named color: French Blue (#436BAD). oklch(51.4% 0.133 267.8), rgb(70, 97, 179).
Aa
White text reads best on this color (5.79:1).
About this color
#4661B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.133 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.031 away. White text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #4661B3 |
| RGB | rgb(70, 97, 179) |
| HSL | hsl(225, 44%, 49%) |
| OKLCH | oklch(51.4% 0.133 267.8) |
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 #4661B3 | 5.79:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #4661B3 | 3.62:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #4661B3 text on white | 5.79:1 | AA | Lc 78.8 | Fine for body text |
| #4661B3 text on black | 3.62:1 | AA large text | Lc -23.0 | 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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400
#859EE2
oklch(70.7% 0.104 268.2)
-
Step 500
500
#6785D9
oklch(63.2% 0.131 267.7)
-
Step 600
600
#4F6DC7
oklch(55.7% 0.144 267.7)
-
Step 700
700 (this color)
#4661B3
oklch(51.4% 0.133 267.8)
-
Step 800
800
#354A8B
oklch(42.7% 0.111 268)
-
Step 900
900
#2E3E6F
oklch(37.6% 0.086 268.4)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#4661B3 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) | #3A6BB6 | 0.028 |
| Deuteranopia (no green cones) | #2961B1 | 0.029 |
| Tritanopia (no blue cones) | #007381 | 0.115 |
| Achromatopsia (no color) | #656565 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4661B3
#4661B3
oklch(51.4% 0.133 267.8)
- #806200
#806200
oklch(51.2% 0.105 87.6)
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 #4661B3, closest first.
No curated palette has a color within ΔE 0.04 of #4661B3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.031
- Mid Blue #276AB3 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.049
- Iris #6258C4 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.057
- Muted Blue #3B719F ΔE 0.061
- Windows Blue #3778BF ΔE 0.062
Use #4661B3 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.