#336B8F
Closest named color: Denim (#3B638C). oklch(50.6% 0.082 239.4), rgb(51, 107, 143).
Aa
White text reads best on this color (5.76:1).
About this color
#336B8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.082 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.023 away. White text reads best on it, at 5.76:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #336B8F |
| RGB | rgb(51, 107, 143) |
| HSL | hsl(203, 47%, 38%) |
| OKLCH | oklch(50.6% 0.082 239.4) |
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 #336B8F | 5.76:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #336B8F | 3.64:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #336B8F text on white | 5.76:1 | AA | Lc 78.7 | Fine for body text |
| #336B8F text on black | 3.64:1 | AA large text | Lc -23.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7CA7C5
oklch(70.8% 0.064 239.2)
-
Step 500
500
#5990B6
oklch(63% 0.082 240)
-
Step 600
600
#3D7AA2
oklch(55.6% 0.089 239.8)
-
Step 700
700 (this color)
#336B8F
oklch(50.6% 0.082 239.4)
-
Step 800
800
#285470
oklch(42.8% 0.067 239)
-
Step 900
900
#25455B
oklch(37.6% 0.054 240.3)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#336B8F 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) | #5B6B91 | 0.046 |
| Deuteranopia (no green cones) | #4E628E | 0.036 |
| Tritanopia (no blue cones) | #007477 | 0.060 |
| Achromatopsia (no color) | #666666 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #336B8F
#336B8F
oklch(50.6% 0.082 239.4)
- #875932
#875932
oklch(50.6% 0.081 59.7)
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 #336B8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.023
- Ocean Blue #03719C ΔE 0.029
- Muted Blue #3B719F ΔE 0.030
- Sea Blue #047495 ΔE 0.030
- Peacock Blue #016795 ΔE 0.031
- Metallic Blue #4F738E ΔE 0.041
- Dusky Blue #475F94 ΔE 0.042
- Dull Blue #49759C ΔE 0.042
Use #336B8F 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.