#4B57C7
Closest named color: Warm Blue (#4B57DB). oklch(51.1% 0.173 274), rgb(75, 87, 199).
Aa
White text reads best on this color (6.02:1).
About this color
#4B57C7 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.173 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.031 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #4B57C7 |
| RGB | rgb(75, 87, 199) |
| HSL | hsl(234, 53%, 54%) |
| OKLCH | oklch(51.1% 0.173 274) |
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 #4B57C7 | 6.02:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #4B57C7 | 3.48:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #4B57C7 text on white | 6.02:1 | AA | Lc 79.7 | Fine for body text |
| #4B57C7 text on black | 3.48:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#AFBDF7
oklch(80.8% 0.084 273.9)
-
Step 400
400
#8799F3
oklch(70.7% 0.133 273.9)
-
Step 500
500
#6B7DEF
oklch(63.1% 0.171 273.8)
-
Step 600
600
#5563DE
oklch(55.7% 0.186 273.8)
-
Step 700
700 (this color)
#4B57C7
oklch(51.1% 0.173 274)
-
Step 800
800
#39439C
oklch(42.7% 0.144 273.8)
-
Step 900
900
#313A7C
oklch(37.8% 0.111 274)
-
Step 950
950
#1C2248
oklch(26.9% 0.07 274)
#4B57C7 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) | #0068CB | 0.059 |
| Deuteranopia (no green cones) | #005EC5 | 0.053 |
| Tritanopia (no blue cones) | #007286 | 0.147 |
| Achromatopsia (no color) | #636363 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B57C7
#4B57C7
oklch(51.1% 0.173 274)
- #7A6400
#7A6400
oklch(51% 0.105 93.8)
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 #4B57C7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.031
- Iris #6258C4 ΔE 0.034
- Slate Blue #6A5ACD ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.048
- Light Indigo #6D5ACF ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.057
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
Use #4B57C7 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.