#4B5AC5
Closest named color: Iris (#6258C4). oklch(51.5% 0.166 273.1), rgb(75, 90, 197).
Aa
White text reads best on this color (5.88:1).
About this color
#4B5AC5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.166 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.032 away. White text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #4B5AC5 |
| RGB | rgb(75, 90, 197) |
| HSL | hsl(233, 51%, 53%) |
| OKLCH | oklch(51.5% 0.166 273.1) |
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 #4B5AC5 | 5.88:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #4B5AC5 | 3.56:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #4B5AC5 text on white | 5.88:1 | AA | Lc 79.1 | Fine for body text |
| #4B5AC5 text on black | 3.56:1 | AA large text | Lc -22.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBEF5
oklch(80.9% 0.08 272.7)
-
Step 400
400
#879AF1
oklch(70.8% 0.129 273.3)
-
Step 500
500
#6A7EEB
oklch(63% 0.164 273)
-
Step 600
600
#5465DA
oklch(55.7% 0.178 273)
-
Step 700
700 (this color)
#4B5AC5
oklch(51.5% 0.166 273.1)
-
Step 800
800
#384499
oklch(42.6% 0.138 273)
-
Step 900
900
#303A7A
oklch(37.6% 0.109 273.4)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#4B5AC5 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) | #0D6AC9 | 0.055 |
| Deuteranopia (no green cones) | #005FC3 | 0.052 |
| Tritanopia (no blue cones) | #007387 | 0.141 |
| Achromatopsia (no color) | #646464 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B5AC5
#4B5AC5
oklch(51.5% 0.166 273.1)
- #7C6500
#7C6500
oklch(51.4% 0.105 93.2)
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 #4B5AC5, closest first.
No curated palette has a color within ΔE 0.04 of #4B5AC5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.032
- Warm Blue #4B57DB ΔE 0.035
- Dark Periwinkle #665FD1 ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.052
- Royal Blue #4169E1 ΔE 0.054
- Mid Blue #276AB3 ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.061
Use #4B5AC5 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.