#2163D8
Closest named color: Azul (#1D5DEC). oklch(53% 0.192 261), rgb(33, 99, 216).
Aa
White text reads best on this color (5.46:1).
About this color
#2163D8 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.192 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.034 away. White text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #2163D8 |
| RGB | rgb(33, 99, 216) |
| HSL | hsl(218, 73%, 49%) |
| OKLCH | oklch(53% 0.192 261) |
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 #2163D8 | 5.46:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #2163D8 | 3.84:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #2163D8 text on white | 5.46:1 | AA | Lc 76.6 | Fine for body text |
| #2163D8 text on black | 3.84:1 | AA large text | Lc -25.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A1C2F9
oklch(81% 0.086 260.5)
-
Step 400
400
#6EA0F6
oklch(70.8% 0.138 260.7)
-
Step 500
500
#4785F2
oklch(63.1% 0.176 260.8)
-
Step 600
600 (this color)
#2163D8
oklch(53% 0.192 261)
-
Step 700
700
#1C59C3
oklch(49.1% 0.177 260.8)
-
Step 800
800
#1A499E
oklch(42.7% 0.148 261.1)
-
Step 900
900
#1B3E7E
oklch(37.7% 0.116 261.2)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#2163D8 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) | #0072DC | 0.037 |
| Deuteranopia (no green cones) | #0061D6 | 0.014 |
| Tritanopia (no blue cones) | #008094 | 0.146 |
| Achromatopsia (no color) | #696969 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2163D8
#2163D8
oklch(53% 0.192 261)
- #8C6400
#8C6400
oklch(53.1% 0.11 81.1)
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 #2163D8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.034
- Royal Blue #4169E1 ΔE 0.035
- Cerulean Blue #056EEE ΔE 0.041
- Warm Blue #4B57DB ΔE 0.043
- Neon Blue #4361EE ΔE 0.045
- Bright Blue #0165FC ΔE 0.055
- Mid Blue #276AB3 ΔE 0.063
- Electric Blue #0652FF ΔE 0.071
Use #2163D8 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.