#337497
Closest named color: Muted Blue (#3B719F). oklch(53.2% 0.086 235.2), rgb(51, 116, 151).
Aa
White text reads best on this color (5.13:1).
About this color
#337497 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.086 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.019 away. White text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.08:1 |
| White text | 5.13:1 |
Values
| HEX | #337497 |
| RGB | rgb(51, 116, 151) |
| HSL | hsl(201, 50%, 40%) |
| OKLCH | oklch(53.2% 0.086 235.2) |
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 #337497 | 5.13:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #337497 | 4.08:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #337497 text on white | 5.13:1 | AA | Lc 75.2 | Fine for body text |
| #337497 text on black | 4.08:1 | AA large text | Lc -26.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7BA7C2
oklch(70.6% 0.062 235.7)
-
Step 500
500
#5791B3
oklch(63% 0.08 235.7)
-
Step 600
600 (this color)
#337497
oklch(53.2% 0.086 235.2)
-
Step 700
700
#2C6887
oklch(49.2% 0.079 234.2)
-
Step 800
800
#26556E
oklch(42.8% 0.066 234.5)
-
Step 900
900
#244659
oklch(37.7% 0.051 234.9)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#337497 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) | #637399 | 0.053 |
| Deuteranopia (no green cones) | #556996 | 0.044 |
| Tritanopia (no blue cones) | #007D80 | 0.057 |
| Achromatopsia (no color) | #6D6D6D | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337497
#337497
oklch(53.2% 0.086 235.2)
- #935E39
#935E39
oklch(53.2% 0.087 54.6)
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 #337497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.019
- Sea Blue #047495 ΔE 0.022
- Dull Blue #49759C ΔE 0.023
- Ocean Blue #03719C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.029
- Cerulean #457B9D ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.030
- Ocean #017B92 ΔE 0.031
Use #337497 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.