#4F5BB0
Closest named color: Iris (#6258C4). oklch(50.5% 0.134 274.5), rgb(79, 91, 176).
Aa
White text reads best on this color (6.07:1).
About this color
#4F5BB0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.134 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #4F5BB0 |
| RGB | rgb(79, 91, 176) |
| HSL | hsl(233, 38%, 50%) |
| OKLCH | oklch(50.5% 0.134 274.5) |
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 #4F5BB0 | 6.07:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #4F5BB0 | 3.45:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #4F5BB0 text on white | 6.07:1 | AA | Lc 80.1 | Fine for body text |
| #4F5BB0 text on black | 3.45:1 | AA large text | Lc -21.7 | 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
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B3BEEB
oklch(80.8% 0.065 274.1)
-
Step 400
400
#8D9BE1
oklch(70.6% 0.104 274.8)
-
Step 500
500
#7281D9
oklch(63.1% 0.133 274.6)
-
Step 600
600
#5B69C6
oklch(55.6% 0.144 274.3)
-
Step 700
700 (this color)
#4F5BB0
oklch(50.5% 0.134 274.5)
-
Step 800
800
#3E478B
oklch(42.6% 0.112 274.9)
-
Step 900
900
#343C6F
oklch(37.6% 0.087 274.7)
-
Step 950
950
#1F2441
oklch(27.1% 0.054 274.8)
#4F5BB0 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) | #3367B3 | 0.040 |
| Deuteranopia (no green cones) | #265EAE | 0.043 |
| Tritanopia (no blue cones) | #1D6E7D | 0.119 |
| Achromatopsia (no color) | #626262 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F5BB0
#4F5BB0
oklch(50.5% 0.134 274.5)
- #786300
#786300
oklch(50.5% 0.104 94.4)
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 #4F5BB0, closest first.
No curated palette has a color within ΔE 0.04 of #4F5BB0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- French Blue #436BAD ΔE 0.045
- Dusky Blue #475F94 ΔE 0.050
- Mid Blue #276AB3 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.061
- Twilight #4E518B ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.063
Use #4F5BB0 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.