#4B5BBA
Closest named color: Iris (#6258C4). oklch(50.9% 0.15 272.8), rgb(75, 91, 186).
Aa
White text reads best on this color (5.99:1).
About this color
#4B5BBA is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.150 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.037 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #4B5BBA |
| RGB | rgb(75, 91, 186) |
| HSL | hsl(231, 45%, 51%) |
| OKLCH | oklch(50.9% 0.15 272.8) |
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 #4B5BBA | 5.99:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #4B5BBA | 3.50:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #4B5BBA text on white | 5.99:1 | AA | Lc 79.7 | Fine for body text |
| #4B5BBA text on black | 3.50:1 | AA large text | Lc -22.1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF0
oklch(80.9% 0.072 273.3)
-
Step 400
400
#889BE9
oklch(70.6% 0.116 272.7)
-
Step 500
500
#6C80E2
oklch(63% 0.149 272.8)
-
Step 600
600
#5668D0
oklch(55.7% 0.16 272.7)
-
Step 700
700 (this color)
#4B5BBA
oklch(50.9% 0.15 272.8)
-
Step 800
800
#3A4792
oklch(42.8% 0.124 272.7)
-
Step 900
900
#313C74
oklch(37.7% 0.096 272.6)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#4B5BBA 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) | #2768BD | 0.044 |
| Deuteranopia (no green cones) | #0D5FB8 | 0.049 |
| Tritanopia (no blue cones) | #007182 | 0.130 |
| Achromatopsia (no color) | #636363 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5BBA
#4B5BBA
oklch(50.9% 0.15 272.8)
- #7B6300
#7B6300
oklch(50.9% 0.104 92.2)
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 #4B5BBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.037
- French Blue #436BAD ΔE 0.051
- Mid Blue #276AB3 ΔE 0.051
- Warm Blue #4B57DB ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.060
- Dusky Blue #475F94 ΔE 0.064
Use #4B5BBA 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.