#4F57D5
Closest named color: Warm Blue (#4B57DB). oklch(52.4% 0.19 274.9), rgb(79, 87, 213).
Aa
White text reads best on this color (5.74:1).
About this color
#4F57D5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.190 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.011 away. White text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #4F57D5 |
| RGB | rgb(79, 87, 213) |
| HSL | hsl(236, 61%, 57%) |
| OKLCH | oklch(52.4% 0.19 274.9) |
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 #4F57D5 | 5.74:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #4F57D5 | 3.65:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #4F57D5 text on white | 5.74:1 | AA | Lc 78.3 | Fine for body text |
| #4F57D5 text on black | 3.65:1 | AA large text | Lc -23.5 | 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 600.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7F9
oklch(88.4% 0.048 274.9)
-
Step 300
300
#B0BDF8
oklch(80.9% 0.085 274.7)
-
Step 400
400
#8898F5
oklch(70.7% 0.137 275)
-
Step 500
500
#6D7BF1
oklch(63% 0.175 275.1)
-
Step 600
600 (this color)
#4F57D5
oklch(52.4% 0.19 274.9)
-
Step 700
700
#484FC2
oklch(49% 0.177 275.1)
-
Step 800
800
#3B429D
oklch(42.8% 0.146 275.1)
-
Step 900
900
#32397D
oklch(37.8% 0.114 275.1)
-
Step 950
950
#1D2249
oklch(27% 0.072 275)
#4F57D5 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) | #006CD9 | 0.065 |
| Deuteranopia (no green cones) | #0060D2 | 0.057 |
| Tritanopia (no blue cones) | #00768E | 0.159 |
| Achromatopsia (no color) | #666666 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F57D5
#4F57D5
oklch(52.4% 0.19 274.9)
- #7E6900
#7E6900
oklch(52.6% 0.108 95.2)
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 #4F57D5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.011
- Iris #6258C4 ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.041
- Slate Blue #6A5ACD ΔE 0.043
- Neon Blue #4361EE ΔE 0.045
- Royal Blue #4169E1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.047
- Bluey Purple #6241C7 ΔE 0.056
Use #4F57D5 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.