#2771F1
Closest named color: Cerulean Blue (#056EEE). oklch(57.9% 0.206 260.7), rgb(39, 113, 241).
Aa
Black text reads best on this color (4.71:1).
About this color
#2771F1 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.206 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.016 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #2771F1 |
| RGB | rgb(39, 113, 241) |
| HSL | hsl(218, 88%, 55%) |
| OKLCH | oklch(57.9% 0.206 260.7) |
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 #2771F1 | 4.45:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #2771F1 | 4.71:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #2771F1 text on white | 4.45:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #2771F1 text on black | 4.71:1 | AA | Lc -31.4 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC2FD
oklch(81% 0.092 260.7)
-
Step 400
400
#699FFC
oklch(70.6% 0.148 260.7)
-
Step 500
500
#4084FA
oklch(63.2% 0.189 260.6)
-
Step 600
600 (this color)
#2771F1
oklch(57.9% 0.206 260.7)
-
Step 700
700
#1257CB
oklch(49.2% 0.192 260.8)
-
Step 800
800
#1248A4
oklch(42.7% 0.159 260.7)
-
Step 900
900
#163D82
oklch(37.6% 0.125 260.9)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#2771F1 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) | #0081F6 | 0.039 |
| Deuteranopia (no green cones) | #006FEF | 0.015 |
| Tritanopia (no blue cones) | #0091A6 | 0.159 |
| Achromatopsia (no color) | #777777 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2771F1
#2771F1
oklch(57.9% 0.206 260.7)
- #9E7100
#9E7100
oklch(57.9% 0.12 80.8)
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 #2771F1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.016
- Clear Blue #247AFD ΔE 0.027
- Royal Blue #4169E1 ΔE 0.033
- Bright Blue #0165FC ΔE 0.038
- Neon Blue #4361EE ΔE 0.039
- Azul #1D5DEC ΔE 0.050
- Warm Blue #4B57DB ΔE 0.069
- Cornflower #6A79F7 ΔE 0.071
Use #2771F1 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.