#5556EA
Closest named color: Warm Blue (#4B57DB). oklch(54.4% 0.217 276.1), rgb(85, 86, 234).
Aa
White text reads best on this color (5.37:1).
About this color
#5556EA is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.217 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.027 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.217) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #5556EA |
| RGB | rgb(85, 86, 234) |
| HSL | hsl(240, 78%, 63%) |
| OKLCH | oklch(54.4% 0.217 276.1) |
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 #5556EA | 5.37:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #5556EA | 3.90:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #5556EA text on white | 5.37:1 | AA | Lc 76.2 | Fine for body text |
| #5556EA text on black | 3.90:1 | AA large text | Lc -25.5 | 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 600.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
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
#8896FF
oklch(70.8% 0.153 276)
-
Step 500
500
#6D76FF
oklch(63% 0.2 276.2)
-
Step 600
600 (this color)
#5556EA
oklch(54.4% 0.217 276.1)
-
Step 700
700
#4949CF
oklch(49.1% 0.201 276.1)
-
Step 800
800
#3B3DA8
oklch(42.8% 0.168 275.9)
-
Step 900
900
#323685
oklch(37.8% 0.13 276)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#5556EA 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) | #0071EF | 0.075 |
| Deuteranopia (no green cones) | #0064E7 | 0.063 |
| Tritanopia (no blue cones) | #007C98 | 0.180 |
| Achromatopsia (no color) | #6A6A6A | 0.218 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5556EA
#5556EA
oklch(54.4% 0.217 276.1)
- #836F00
#836F00
oklch(54.4% 0.112 96.6)
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 #5556EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.027
- Neon Blue #4361EE ΔE 0.029
- Royal Blue #4169E1 ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.052
- Azul #1D5DEC ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.056
- Purpley Blue #5F34E7 ΔE 0.060
Use #5556EA 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.