#336599
Closest named color: Denim (#3B638C). oklch(49.7% 0.1 251.3), rgb(51, 101, 153).
Aa
White text reads best on this color (6.06:1).
About this color
#336599 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.100 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.021 away. White text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #336599 |
| RGB | rgb(51, 101, 153) |
| HSL | hsl(211, 50%, 40%) |
| OKLCH | oklch(49.7% 0.1 251.3) |
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 #336599 | 6.06:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #336599 | 3.46:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #336599 text on white | 6.06:1 | AA | Lc 80.1 | Fine for body text |
| #336599 text on black | 3.46:1 | AA large text | Lc -21.8 | 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 700.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#AAC3DF
oklch(80.8% 0.048 251.4)
-
Step 400
400
#7DA4D0
oklch(70.7% 0.078 251.9)
-
Step 500
500
#5B8DC3
oklch(63.1% 0.098 251.4)
-
Step 600
600
#4076B0
oklch(55.5% 0.108 251.8)
-
Step 700
700 (this color)
#336599
oklch(49.7% 0.1 251.3)
-
Step 800
800
#2A517B
oklch(42.7% 0.083 251.9)
-
Step 900
900
#264363
oklch(37.6% 0.065 252.1)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#336599 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) | #4E689B | 0.032 |
| Deuteranopia (no green cones) | #405E98 | 0.022 |
| Tritanopia (no blue cones) | #007178 | 0.078 |
| Achromatopsia (no color) | #626262 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #336599
#336599
oklch(49.7% 0.1 251.3)
- #855712
#855712
oklch(49.6% 0.099 71.1)
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 #336599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.021
- Dusky Blue #475F94 ΔE 0.025
- Peacock Blue #016795 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.029
- Muted Blue #3B719F ΔE 0.037
- Ocean Blue #03719C ΔE 0.038
- French Blue #436BAD ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
Use #336599 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.