#3763CA
Closest named color: Royal Blue (#4169E1). oklch(52.6% 0.168 264.1), rgb(55, 99, 202).
Aa
White text reads best on this color (5.52:1).
About this color
#3763CA is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.168 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.040 away. White text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.80:1 |
| White text | 5.52:1 |
Values
| HEX | #3763CA |
| RGB | rgb(55, 99, 202) |
| HSL | hsl(222, 58%, 50%) |
| OKLCH | oklch(52.6% 0.168 264.1) |
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 #3763CA | 5.52:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #3763CA | 3.80:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #3763CA text on white | 5.52:1 | AA | Lc 77.2 | Fine for body text |
| #3763CA text on black | 3.80:1 | AA large text | Lc -24.6 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A8C1F2
oklch(80.9% 0.075 263.7)
-
Step 400
400
#7A9FEC
oklch(70.7% 0.121 264)
-
Step 500
500
#5985E6
oklch(63.2% 0.154 264.1)
-
Step 600
600 (this color)
#3763CA
oklch(52.6% 0.168 264.1)
-
Step 700
700
#315AB8
oklch(49.2% 0.156 263.9)
-
Step 800
800
#294A95
oklch(42.8% 0.129 263.9)
-
Step 900
900
#253E76
oklch(37.5% 0.101 264.1)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#3763CA 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) | #2270CE | 0.034 |
| Deuteranopia (no green cones) | #0062C8 | 0.030 |
| Tritanopia (no blue cones) | #007C8D | 0.134 |
| Achromatopsia (no color) | #696969 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3763CA
#3763CA
oklch(52.6% 0.168 264.1)
- #886400
#886400
oklch(52.6% 0.108 83.8)
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 #3763CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.043
- Mid Blue #276AB3 ΔE 0.045
- French Blue #436BAD ΔE 0.055
- Iris #6258C4 ΔE 0.056
- Neon Blue #4361EE ΔE 0.057
- Azul #1D5DEC ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.059
Use #3763CA 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.