#4F54CB
Closest named color: Warm Blue (#4B57DB). oklch(51.1% 0.181 276.1), rgb(79, 84, 203).
Aa
White text reads best on this color (6.06:1).
About this color
#4F54CB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.181 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #4F54CB |
| RGB | rgb(79, 84, 203) |
| HSL | hsl(238, 54%, 55%) |
| OKLCH | oklch(51.1% 0.181 276.1) |
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 #4F54CB | 6.06:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #4F54CB | 3.46:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #4F54CB text on white | 6.06:1 | AA | Lc 79.9 | Fine for body text |
| #4F54CB text on black | 3.46:1 | AA large text | Lc -22.0 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D0D7FA
oklch(88.5% 0.049 276.4)
-
Step 300
300
#B1BCF9
oklch(80.8% 0.087 276.4)
-
Step 400
400
#8A97F7
oklch(70.7% 0.141 276.3)
-
Step 500
500
#6F7AF3
oklch(63.1% 0.179 276.1)
-
Step 600
600
#595FE2
oklch(55.5% 0.195 276)
-
Step 700
700 (this color)
#4F54CB
oklch(51.1% 0.181 276.1)
-
Step 800
800
#3C419F
oklch(42.8% 0.15 275.8)
-
Step 900
900
#33387E
oklch(37.7% 0.117 276.2)
-
Step 950
950
#1D214A
oklch(26.9% 0.075 275.9)
#4F54CB 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) | #0068CF | 0.066 |
| Deuteranopia (no green cones) | #005DC9 | 0.059 |
| Tritanopia (no blue cones) | #007187 | 0.155 |
| Achromatopsia (no color) | #626262 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F54CB
#4F54CB
oklch(51.1% 0.181 276.1)
- #786500
#786500
oklch(51% 0.105 96.1)
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 #4F54CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Iris #6258C4 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.051
- Blurple #5539CC ΔE 0.055
Use #4F54CB 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.