#4556CB
Closest named color: Warm Blue (#4B57DB). oklch(50.8% 0.181 272), rgb(69, 86, 203).
Aa
White text reads best on this color (6.09:1).
About this color
#4556CB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.181 and its hue 272°. 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 6.09:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #4556CB |
| RGB | rgb(69, 86, 203) |
| HSL | hsl(232, 56%, 53%) |
| OKLCH | oklch(50.8% 0.181 272) |
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 #4556CB | 6.09:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #4556CB | 3.44:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #4556CB text on white | 6.09:1 | AA | Lc 80.0 | Fine for body text |
| #4556CB text on black | 3.44:1 | AA large text | Lc -21.8 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEFA
oklch(81% 0.087 272.1)
-
Step 400
400
#8299F7
oklch(70.6% 0.14 272)
-
Step 500
500
#667DF4
oklch(63.2% 0.179 272.1)
-
Step 600
600
#4F62E3
oklch(55.5% 0.195 272.1)
-
Step 700
700 (this color)
#4556CB
oklch(50.8% 0.181 272)
-
Step 800
800
#35439F
oklch(42.7% 0.149 272)
-
Step 900
900
#2D3A7E
oklch(37.7% 0.116 271.6)
-
Step 950
950
#1A224A
oklch(26.9% 0.075 272)
#4556CB 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 | 0.055 |
| Deuteranopia (no green cones) | #005CC9 | 0.046 |
| Tritanopia (no blue cones) | #007388 | 0.150 |
| Achromatopsia (no color) | #626262 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4556CB
#4556CB
oklch(50.8% 0.181 272)
- #7B6300
#7B6300
oklch(50.9% 0.104 92.2)
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 #4556CB, closest first.
No curated palette has a color within ΔE 0.04 of #4556CB.
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 0.043
- Dark Periwinkle #665FD1 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.058
- Neon Blue #4361EE ΔE 0.059
Use #4556CB 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.