#367BDF
Closest named color: Royal Blue (#4169E1). oklch(59.1% 0.168 258.1), rgb(54, 123, 223).
Aa
Black text reads best on this color (5.05:1).
About this color
#367BDF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.168 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.046 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #367BDF |
| RGB | rgb(54, 123, 223) |
| HSL | hsl(216, 73%, 54%) |
| OKLCH | oklch(59.1% 0.168 258.1) |
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 #367BDF | 4.15:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #367BDF | 5.05:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #367BDF text on white | 4.15:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #367BDF text on black | 5.05:1 | AA | Lc -33.5 | Non-text elements, placeholder text |
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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A3C3F2
oklch(81% 0.075 257.9)
-
Step 400
400
#70A2EB
oklch(70.7% 0.12 257.8)
-
Step 500
500
#4A88E5
oklch(63% 0.155 258.4)
-
Step 600
600 (this color)
#367BDF
oklch(59.1% 0.168 258.1)
-
Step 700
700
#1D5DB7
oklch(49.1% 0.156 258.1)
-
Step 800
800
#1B4D94
oklch(42.8% 0.128 258)
-
Step 900
900
#1C4076
oklch(37.6% 0.101 258.5)
-
Step 950
950
#112645
oklch(27% 0.064 258.1)
#367BDF 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) | #4785E3 | 0.032 |
| Deuteranopia (no green cones) | #2275DD | 0.022 |
| Tritanopia (no blue cones) | #0093A2 | 0.130 |
| Achromatopsia (no color) | #7C7C7C | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #367BDF
#367BDF
oklch(59.1% 0.168 258.1)
- #A57300
#A57300
oklch(59.2% 0.123 78.4)
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 #367BDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.046
- Clear Blue #247AFD ΔE 0.046
- Windows Blue #3778BF ΔE 0.049
- Water Blue #0E87CC ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.054
- Soft Blue #6488EA ΔE 0.062
- Cornflower #6A79F7 ΔE 0.066
Use #367BDF 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.