#5771EC
Closest named color: Cornflower (#6A79F7). oklch(59.4% 0.187 270.7), rgb(87, 113, 236).
Aa
Black text reads best on this color (4.97:1).
About this color
#5771EC is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.187 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.036 away. Black text reads best on it, at 4.97:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 4.97:1 |
| White text | 4.21:1 |
Values
| HEX | #5771EC |
| RGB | rgb(87, 113, 236) |
| HSL | hsl(230, 80%, 63%) |
| OKLCH | oklch(59.4% 0.187 270.7) |
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 #5771EC | 4.21:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #5771EC | 4.97:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #5771EC text on white | 4.21:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #5771EC text on black | 4.97:1 | AA | Lc -32.9 | 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 500.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#AABEFC
oklch(80.9% 0.091 270.5)
-
Step 400
400
#7F9AFB
oklch(70.8% 0.145 270.6)
-
Step 500
500 (this color)
#5771EC
oklch(59.4% 0.187 270.7)
-
Step 600
600
#4A62E8
oklch(55.6% 0.203 270.6)
-
Step 700
700
#3C50CA
oklch(49.2% 0.189 270.6)
-
Step 800
800
#3142A3
oklch(42.6% 0.157 270.7)
-
Step 900
900
#2B3981
oklch(37.6% 0.122 271.1)
-
Step 950
950
#19224C
oklch(27% 0.078 271.2)
#5771EC 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) | #2382F0 | 0.052 |
| Deuteranopia (no green cones) | #0075E9 | 0.053 |
| Tritanopia (no blue cones) | #008EA4 | 0.157 |
| Achromatopsia (no color) | #7B7B7B | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5771EC
#5771EC
oklch(59.4% 0.187 270.7)
- #9A7B00
#9A7B00
oklch(59.6% 0.122 91)
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 #5771EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.036
- Royal Blue #4169E1 ΔE 0.037
- Clear Blue #247AFD ΔE 0.047
- Neon Blue #4361EE ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.058
- Soft Blue #6488EA ΔE 0.063
Use #5771EC 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.