#3F67CA
Closest named color: Royal Blue (#4169E1). oklch(53.8% 0.16 264.9), rgb(63, 103, 202).
Aa
White text reads best on this color (5.24:1).
About this color
#3F67CA is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.160 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.036 away. White text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #3F67CA |
| RGB | rgb(63, 103, 202) |
| HSL | hsl(223, 57%, 52%) |
| OKLCH | oklch(53.8% 0.16 264.9) |
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 #3F67CA | 5.24:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #3F67CA | 4.00:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #3F67CA text on white | 5.24:1 | AA | Lc 75.7 | Fine for body text |
| #3F67CA text on black | 4.00:1 | AA large text | Lc -26.0 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#AAC1F0
oklch(81% 0.071 264.4)
-
Step 400
400
#7D9FE9
oklch(70.7% 0.115 264.8)
-
Step 500
500
#5D85E2
oklch(63.1% 0.147 265)
-
Step 600
600 (this color)
#3F67CA
oklch(53.8% 0.16 264.9)
-
Step 700
700
#365AB4
oklch(49.1% 0.149 265)
-
Step 800
800
#2D4A92
oklch(42.7% 0.124 265.1)
-
Step 900
900
#283F74
oklch(37.8% 0.095 264.6)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#3F67CA 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) | #3073CE | 0.031 |
| Deuteranopia (no green cones) | #0166C8 | 0.036 |
| Tritanopia (no blue cones) | #007E8F | 0.129 |
| Achromatopsia (no color) | #6C6C6C | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F67CA
#3F67CA
oklch(53.8% 0.16 264.9)
- #8B6800
#8B6800
oklch(53.8% 0.11 85.3)
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 #3F67CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.049
- French Blue #436BAD ΔE 0.049
- Windows Blue #3778BF ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.052
- Iris #6258C4 ΔE 0.053
- Neon Blue #4361EE ΔE 0.058
Use #3F67CA 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.