#4B57BD
Closest named color: Iris (#6258C4). oklch(50.3% 0.159 274.2), rgb(75, 87, 189).
Aa
White text reads best on this color (6.18:1).
About this color
#4B57BD is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.159 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.036 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #4B57BD |
| RGB | rgb(75, 87, 189) |
| HSL | hsl(234, 46%, 52%) |
| OKLCH | oklch(50.3% 0.159 274.2) |
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 #4B57BD | 6.18:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #4B57BD | 3.39:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #4B57BD text on white | 6.18:1 | AA | Lc 80.5 | Fine for body text |
| #4B57BD text on black | 3.39:1 | AA large text | Lc -21.3 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B1BEF3
oklch(81% 0.076 273.9)
-
Step 400
400
#899AED
oklch(70.7% 0.123 274)
-
Step 500
500
#6E7EE7
oklch(63% 0.158 274.5)
-
Step 600
600
#5765D5
oklch(55.5% 0.171 274.1)
-
Step 700
700 (this color)
#4B57BD
oklch(50.3% 0.159 274.2)
-
Step 800
800
#3B4596
oklch(42.8% 0.132 274.1)
-
Step 900
900
#323B77
oklch(37.8% 0.102 274.1)
-
Step 950
950
#1D2346
oklch(27.1% 0.065 273.9)
#4B57BD 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) | #1466C1 | 0.054 |
| Deuteranopia (no green cones) | #005CBB | 0.054 |
| Tritanopia (no blue cones) | #006F81 | 0.138 |
| Achromatopsia (no color) | #616161 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B57BD
#4B57BD
oklch(50.3% 0.159 274.2)
- #786200
#786200
oklch(50.3% 0.103 93.5)
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 #4B57BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.036
- Warm Blue #4B57DB ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.059
- Light Indigo #6D5ACF ΔE 0.059
- Mid Blue #276AB3 ΔE 0.061
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
Use #4B57BD 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.