#4F61B5
Closest named color: French Blue (#436BAD). oklch(52% 0.133 271.9), rgb(79, 97, 181).
Aa
White text reads best on this color (5.66:1).
About this color
#4F61B5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.133 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.034 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #4F61B5 |
| RGB | rgb(79, 97, 181) |
| HSL | hsl(229, 41%, 51%) |
| OKLCH | oklch(52% 0.133 271.9) |
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 #4F61B5 | 5.66:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #4F61B5 | 3.70:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #4F61B5 text on white | 5.66:1 | AA | Lc 78.1 | Fine for body text |
| #4F61B5 text on black | 3.70:1 | AA large text | Lc -23.7 | 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
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B2BFEB
oklch(81% 0.064 272)
-
Step 400
400
#8A9DE1
oklch(70.8% 0.102 271.6)
-
Step 500
500
#6E83D9
oklch(63.2% 0.132 271.8)
-
Step 600
600
#576AC6
oklch(55.5% 0.144 272.2)
-
Step 700
700 (this color)
#4F61B5
oklch(52% 0.133 271.9)
-
Step 800
800
#3A498B
oklch(42.8% 0.11 271.4)
-
Step 900
900
#323D6F
oklch(37.7% 0.087 272.3)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#4F61B5 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) | #3B6CB8 | 0.034 |
| Deuteranopia (no green cones) | #2D63B3 | 0.036 |
| Tritanopia (no blue cones) | #137482 | 0.120 |
| Achromatopsia (no color) | #676767 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F61B5
#4F61B5
oklch(52% 0.133 271.9)
- #7F6600
#7F6600
oklch(52% 0.106 91.9)
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 #4F61B5, closest first.
No curated palette has a color within ΔE 0.04 of #4F61B5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.034
- Iris #6258C4 ΔE 0.042
- Mid Blue #276AB3 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.062
Use #4F61B5 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.