#2561ED
Closest named color: Azul (#1D5DEC). oklch(54.4% 0.22 263.3), rgb(37, 97, 237).
Aa
White text reads best on this color (5.23:1).
About this color
#2561ED is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.220 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.011 away. White text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.220) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #2561ED |
| RGB | rgb(37, 97, 237) |
| HSL | hsl(222, 85%, 54%) |
| OKLCH | oklch(54.4% 0.22 263.3) |
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 #2561ED | 5.23:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #2561ED | 4.01:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #2561ED text on white | 5.23:1 | AA | Lc 75.2 | Fine for body text |
| #2561ED text on black | 4.01:1 | AA large text | Lc -26.5 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFE
oklch(88.5% 0.054 262.2)
-
Step 300
300
#A1C1FF
oklch(81% 0.095 263.3)
-
Step 400
400
#6E9DFF
oklch(70.6% 0.153 263.6)
-
Step 500
500
#4781FF
oklch(63.2% 0.197 263.3)
-
Step 600
600 (this color)
#2561ED
oklch(54.4% 0.22 263.3)
-
Step 700
700
#1C53D2
oklch(49.2% 0.204 263.2)
-
Step 800
800
#1945AA
oklch(42.8% 0.169 263.3)
-
Step 900
900
#1A3B86
oklch(37.6% 0.132 263.5)
-
Step 950
950
#10234F
oklch(26.9% 0.085 264)
#2561ED 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) | #0076F2 | 0.049 |
| Deuteranopia (no green cones) | #0063EA | 0.014 |
| Tritanopia (no blue cones) | #00859E | 0.168 |
| Achromatopsia (no color) | #6C6C6C | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2561ED
#2561ED
oklch(54.4% 0.22 263.3)
- #8F6900
#8F6900
oklch(54.5% 0.112 83.5)
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 #2561ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.011
- Neon Blue #4361EE ΔE 0.025
- Bright Blue #0165FC ΔE 0.026
- Cerulean Blue #056EEE ΔE 0.030
- Royal Blue #4169E1 ΔE 0.037
- Electric Blue #0652FF ΔE 0.045
- Warm Blue #4B57DB ΔE 0.046
- Clear Blue #247AFD ΔE 0.064
Use #2561ED 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.