#4F51DA
Closest named color: Warm Blue (#4B57DB). oklch(51.8% 0.204 276), rgb(79, 81, 218).
Aa
White text reads best on this color (5.96:1).
About this color
#4F51DA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.204 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.013 away. White text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.52:1 |
| White text | 5.96:1 |
Values
| HEX | #4F51DA |
| RGB | rgb(79, 81, 218) |
| HSL | hsl(239, 65%, 58%) |
| OKLCH | oklch(51.8% 0.204 276) |
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 #4F51DA | 5.96:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #4F51DA | 3.52:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #4F51DA text on white | 5.96:1 | AA | Lc 79.3 | Fine for body text |
| #4F51DA text on black | 3.52:1 | AA large text | Lc -22.6 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6D76FF
oklch(63% 0.2 276.2)
-
Step 600
600
#585AF0
oklch(55.7% 0.22 276)
-
Step 700
700 (this color)
#4F51DA
oklch(51.8% 0.204 276)
-
Step 800
800
#3B3CA9
oklch(42.7% 0.17 276)
-
Step 900
900
#313585
oklch(37.5% 0.132 275.9)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#4F51DA 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) | #006ADE | 0.071 |
| Deuteranopia (no green cones) | #005DD7 | 0.059 |
| Tritanopia (no blue cones) | #00748E | 0.169 |
| Achromatopsia (no color) | #636363 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F51DA
#4F51DA
oklch(51.8% 0.204 276)
- #7B6700
#7B6700
oklch(51.8% 0.106 95.6)
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 #4F51DA, closest first.
No curated palette has a color within ΔE 0.04 of #4F51DA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.013
- Neon Blue #4361EE ΔE 0.047
- Iris #6258C4 ΔE 0.049
- Bluey Purple #6241C7 ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.052
- Blurple #5539CC ΔE 0.053
- Blue With A Hint Of Purple #533CC6 ΔE 0.053
Use #4F51DA 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.