#556EE7
Closest named color: Royal Blue (#4169E1). oklch(58.4% 0.184 270.9), rgb(85, 110, 231).
Aa
Black text reads best on this color (4.77:1).
About this color
#556EE7 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.184 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.028 away. Black text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.77:1 |
| White text | 4.40:1 |
Values
| HEX | #556EE7 |
| RGB | rgb(85, 110, 231) |
| HSL | hsl(230, 75%, 62%) |
| OKLCH | oklch(58.4% 0.184 270.9) |
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 #556EE7 | 4.40:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #556EE7 | 4.77:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #556EE7 text on white | 4.40:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #556EE7 text on black | 4.77:1 | AA | Lc -31.5 | Non-text elements, placeholder text |
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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ACBEF7
oklch(80.8% 0.083 270.9)
-
Step 400
400
#829BF3
oklch(70.7% 0.132 270.7)
-
Step 500
500
#647FEF
oklch(63.1% 0.17 270.7)
-
Step 600
600 (this color)
#556EE7
oklch(58.4% 0.184 270.9)
-
Step 700
700
#3F53C0
oklch(49.1% 0.172 270.9)
-
Step 800
800
#34459B
oklch(42.7% 0.141 270.8)
-
Step 900
900
#2D3B7B
oklch(37.7% 0.11 271)
-
Step 950
950
#1A2348
oklch(27% 0.07 270.8)
#556EE7 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) | #207FEB | 0.053 |
| Deuteranopia (no green cones) | #0072E5 | 0.053 |
| Tritanopia (no blue cones) | #008AA0 | 0.154 |
| Achromatopsia (no color) | #787878 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556EE7
#556EE7
oklch(58.4% 0.184 270.9)
- #967800
#967800
oklch(58.5% 0.12 91.2)
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 #556EE7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.028
- Neon Blue #4361EE ΔE 0.041
- Cornflower #6A79F7 ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.049
- Clear Blue #247AFD ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.053
- Warm Blue #4B57DB ΔE 0.060
Use #556EE7 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.