#336BE1
Closest named color: Royal Blue (#4169E1). oklch(55.8% 0.19 262.8), rgb(51, 107, 225).
Aa
White text reads best on this color (4.84:1).
About this color
#336BE1 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.190 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.012 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #336BE1 |
| RGB | rgb(51, 107, 225) |
| HSL | hsl(221, 74%, 54%) |
| OKLCH | oklch(55.8% 0.19 262.8) |
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 #336BE1 | 4.84:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #336BE1 | 4.33:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #336BE1 text on white | 4.84:1 | AA | Lc 73.1 | Content text, not long reading |
| #336BE1 text on black | 4.33:1 | AA large text | Lc -28.6 | 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
#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
#A3C1F9
oklch(80.9% 0.086 262.7)
-
Step 400
400
#729FF5
oklch(70.7% 0.136 262.5)
-
Step 500
500
#4E84F2
oklch(63.2% 0.175 262.8)
-
Step 600
600 (this color)
#336BE1
oklch(55.8% 0.19 262.8)
-
Step 700
700
#2558C3
oklch(49.2% 0.177 262.6)
-
Step 800
800
#20489D
oklch(42.6% 0.146 262.8)
-
Step 900
900
#1F3E7D
oklch(37.8% 0.113 262.6)
-
Step 950
950
#132549
oklch(27.1% 0.071 262.6)
#336BE1 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) | #117AE5 | 0.038 |
| Deuteranopia (no green cones) | #006ADF | 0.023 |
| Tritanopia (no blue cones) | #00889C | 0.148 |
| Achromatopsia (no color) | #717171 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #336BE1
#336BE1
oklch(55.8% 0.19 262.8)
- #956C00
#956C00
oklch(55.8% 0.115 82.2)
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 #336BE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.012
- Cerulean Blue #056EEE ΔE 0.027
- Neon Blue #4361EE ΔE 0.033
- Azul #1D5DEC ΔE 0.043
- Warm Blue #4B57DB ΔE 0.049
- Bright Blue #0165FC ΔE 0.049
- Clear Blue #247AFD ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.064
Use #336BE1 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.