#2661DC
Closest named color: Azul (#1D5DEC). oklch(53% 0.198 262.5), rgb(38, 97, 220).
Aa
White text reads best on this color (5.48:1).
About this color
#2661DC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.198 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.027 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #2661DC |
| RGB | rgb(38, 97, 220) |
| HSL | hsl(221, 72%, 51%) |
| OKLCH | oklch(53% 0.198 262.5) |
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 #2661DC | 5.48:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #2661DC | 3.82:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #2661DC text on white | 5.48:1 | AA | Lc 76.8 | Fine for body text |
| #2661DC text on black | 3.82:1 | AA large text | Lc -25.0 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FB
oklch(80.9% 0.089 262.7)
-
Step 400
400
#6F9EF9
oklch(70.6% 0.143 262.6)
-
Step 500
500
#4A83F6
oklch(63.1% 0.183 262.5)
-
Step 600
600 (this color)
#2661DC
oklch(53% 0.198 262.5)
-
Step 700
700
#2157C7
oklch(49.2% 0.184 262.5)
-
Step 800
800
#1D48A1
oklch(42.8% 0.152 262.5)
-
Step 900
900
#1D3D80
oklch(37.7% 0.12 262.8)
-
Step 950
950
#11244B
oklch(26.9% 0.077 262.8)
#2661DC 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) | #0072E0 | 0.042 |
| Deuteranopia (no green cones) | #0061DA | 0.015 |
| Tritanopia (no blue cones) | #008095 | 0.153 |
| Achromatopsia (no color) | #696969 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2661DC
#2661DC
oklch(53% 0.198 262.5)
- #8B6500
#8B6500
oklch(53.2% 0.109 82.7)
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 #2661DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.027
- Royal Blue #4169E1 ΔE 0.034
- Warm Blue #4B57DB ΔE 0.038
- Neon Blue #4361EE ΔE 0.038
- Cerulean Blue #056EEE ΔE 0.040
- Bright Blue #0165FC ΔE 0.050
- Electric Blue #0652FF ΔE 0.064
- Mid Blue #276AB3 ΔE 0.071
Use #2661DC 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.