#336FB1
Closest named color: French Blue (#436BAD). oklch(53.4% 0.121 252.9), rgb(51, 111, 177).
Aa
White text reads best on this color (5.18:1).
About this color
#336FB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.121 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.017 away. White text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #336FB1 |
| RGB | rgb(51, 111, 177) |
| HSL | hsl(211, 55%, 45%) |
| OKLCH | oklch(53.4% 0.121 252.9) |
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 #336FB1 | 5.18:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #336FB1 | 4.04:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #336FB1 text on white | 5.18:1 | AA | Lc 75.4 | Fine for body text |
| #336FB1 text on black | 4.04:1 | AA large text | Lc -26.3 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C3E4
oklch(80.8% 0.055 253.6)
-
Step 400
400
#79A4D6
oklch(70.7% 0.087 252.7)
-
Step 500
500
#568CCB
oklch(63% 0.112 253.3)
-
Step 600
600 (this color)
#336FB1
oklch(53.4% 0.121 252.9)
-
Step 700
700
#2C629F
oklch(49.1% 0.114 253.5)
-
Step 800
800
#255180
oklch(42.8% 0.092 252.1)
-
Step 900
900
#234367
oklch(37.7% 0.073 252.7)
-
Step 950
950
#15273C
oklch(26.8% 0.046 253.2)
#336FB1 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) | #5173B4 | 0.034 |
| Deuteranopia (no green cones) | #3E67B0 | 0.023 |
| Tritanopia (no blue cones) | #007E87 | 0.093 |
| Achromatopsia (no color) | #6D6D6D | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #336FB1
#336FB1
oklch(53.4% 0.121 252.9)
- #946100
#946100
oklch(53.5% 0.114 73.4)
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 #336FB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.017
- Mid Blue #276AB3 ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.022
- Muted Blue #3B719F ΔE 0.031
- Windows Blue #3778BF ΔE 0.031
- Nice Blue #107AB0 ΔE 0.034
- Ocean Blue #03719C ΔE 0.044
- Dull Blue #49759C ΔE 0.046
Use #336FB1 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.