#2C63CB
Closest named color: Royal Blue (#4169E1). oklch(52.3% 0.172 261.6), rgb(44, 99, 203).
Aa
White text reads best on this color (5.59:1).
About this color
#2C63CB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.172 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.043 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #2C63CB |
| RGB | rgb(44, 99, 203) |
| HSL | hsl(219, 64%, 48%) |
| OKLCH | oklch(52.3% 0.172 261.6) |
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 #2C63CB | 5.59:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #2C63CB | 3.75:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #2C63CB text on white | 5.59:1 | AA | Lc 77.5 | Fine for body text |
| #2C63CB text on black | 3.75:1 | AA large text | Lc -24.3 | 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 700.
-
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
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F7
oklch(80.8% 0.084 262)
-
Step 400
400
#71A0F3
oklch(70.8% 0.132 261.2)
-
Step 500
500
#4C85EF
oklch(63.1% 0.17 261.6)
-
Step 600
600
#306CDD
oklch(55.6% 0.184 261.6)
-
Step 700
700 (this color)
#2C63CB
oklch(52.3% 0.172 261.6)
-
Step 800
800
#1E499B
oklch(42.6% 0.142 261.7)
-
Step 900
900
#1E3E7C
oklch(37.7% 0.112 262)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#2C63CB 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) | #1E6FCF | 0.031 |
| Deuteranopia (no green cones) | #0061C9 | 0.022 |
| Tritanopia (no blue cones) | #007C8D | 0.134 |
| Achromatopsia (no color) | #686868 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C63CB
#2C63CB
oklch(52.3% 0.172 261.6)
- #896200
#896200
oklch(52.3% 0.108 81.3)
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 #2C63CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.047
- Azul #1D5DEC ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.058
- Neon Blue #4361EE ΔE 0.059
- French Blue #436BAD ΔE 0.059
- Iris #6258C4 ΔE 0.064
Use #2C63CB 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.