#4F55D7
Closest named color: Warm Blue (#4B57DB). oklch(52.2% 0.196 275.3), rgb(79, 85, 215).
Aa
White text reads best on this color (5.81:1).
About this color
#4F55D7 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.196 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.009 away. White text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #4F55D7 |
| RGB | rgb(79, 85, 215) |
| HSL | hsl(237, 63%, 58%) |
| OKLCH | oklch(52.2% 0.196 275.3) |
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 #4F55D7 | 5.81:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #4F55D7 | 3.61:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #4F55D7 text on white | 5.81:1 | AA | Lc 78.6 | Fine for body text |
| #4F55D7 text on black | 3.61:1 | AA large text | Lc -23.2 | 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
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CFD7FD
oklch(88.5% 0.053 275.9)
-
Step 300
300
#AFBCFE
oklch(80.9% 0.095 275.5)
-
Step 400
400
#8796FE
oklch(70.7% 0.152 275.6)
-
Step 500
500
#6C78FC
oklch(63.1% 0.194 275.4)
-
Step 600
600
#565DEB
oklch(55.7% 0.21 275.1)
-
Step 700
700 (this color)
#4F55D7
oklch(52.2% 0.196 275.3)
-
Step 800
800
#3A3EA5
oklch(42.6% 0.162 275.4)
-
Step 900
900
#313783
oklch(37.8% 0.126 275.2)
-
Step 950
950
#1C214D
oklch(27.1% 0.08 274.8)
#4F55D7 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) | #006BDB | 0.066 |
| Deuteranopia (no green cones) | #005FD4 | 0.057 |
| Tritanopia (no blue cones) | #00758E | 0.162 |
| Achromatopsia (no color) | #656565 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F55D7
#4F55D7
oklch(52.2% 0.196 275.3)
- #7D6800
#7D6800
oklch(52.2% 0.107 95.1)
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 #4F55D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.009
- Iris #6258C4 ΔE 0.042
- Neon Blue #4361EE ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.046
- Royal Blue #4169E1 ΔE 0.048
- Light Indigo #6D5ACF ΔE 0.049
- Bluey Purple #6241C7 ΔE 0.054
Use #4F55D7 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.