#4055C7
Closest named color: Warm Blue (#4B57DB). oklch(50.1% 0.178 270.7), rgb(64, 85, 199).
Aa
White text reads best on this color (6.28:1).
About this color
#4055C7 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.178 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.035 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.34:1 |
| White text | 6.28:1 |
Values
| HEX | #4055C7 |
| RGB | rgb(64, 85, 199) |
| HSL | hsl(231, 55%, 52%) |
| OKLCH | oklch(50.1% 0.178 270.7) |
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 #4055C7 | 6.28:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #4055C7 | 3.34:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #4055C7 text on white | 6.28:1 | AA | Lc 80.8 | Fine for body text |
| #4055C7 text on black | 3.34:1 | AA large text | Lc -21.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEF9
oklch(80.8% 0.086 270.6)
-
Step 400
400
#809AF6
oklch(70.6% 0.138 270.6)
-
Step 500
500
#637EF3
oklch(63.1% 0.177 270.8)
-
Step 600
600
#4C64E1
oklch(55.6% 0.191 270.7)
-
Step 700
700 (this color)
#4055C7
oklch(50.1% 0.178 270.7)
-
Step 800
800
#33449E
oklch(42.7% 0.147 270.8)
-
Step 900
900
#2C3A7E
oklch(37.7% 0.116 271.1)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#4055C7 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) | #0066CB | 0.051 |
| Deuteranopia (no green cones) | #005AC5 | 0.041 |
| Tritanopia (no blue cones) | #007186 | 0.145 |
| Achromatopsia (no color) | #606060 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4055C7
#4055C7
oklch(50.1% 0.178 270.7)
- #7A6000
#7A6000
oklch(50.1% 0.102 90.2)
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 #4055C7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.035
- Iris #6258C4 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.061
- Blurple #5539CC ΔE 0.061
- Royal Blue #4169E1 ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.062
Use #4055C7 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.