#337097
Closest named color: Muted Blue (#3B719F). oklch(52.2% 0.088 239.6), rgb(51, 112, 151).
Aa
White text reads best on this color (5.37:1).
About this color
#337097 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.088 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #337097 |
| RGB | rgb(51, 112, 151) |
| HSL | hsl(203, 50%, 40%) |
| OKLCH | oklch(52.2% 0.088 239.6) |
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 #337097 | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #337097 | 3.90:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #337097 text on white | 5.37:1 | AA | Lc 76.6 | Fine for body text |
| #337097 text on black | 3.90:1 | AA large text | Lc -25.2 | 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
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#79A7C7
oklch(70.7% 0.068 239.3)
-
Step 500
500
#5591B9
oklch(63.2% 0.087 239.3)
-
Step 600
600
#377AA5
oklch(55.5% 0.095 239.8)
-
Step 700
700 (this color)
#337097
oklch(52.2% 0.088 239.6)
-
Step 800
800
#245473
oklch(42.7% 0.073 239.9)
-
Step 900
900
#23465D
oklch(37.9% 0.057 239.4)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#337097 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) | #5E7099 | 0.048 |
| Deuteranopia (no green cones) | #506696 | 0.039 |
| Tritanopia (no blue cones) | #007A7D | 0.063 |
| Achromatopsia (no color) | #6A6A6A | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337097
#337097
oklch(52.2% 0.088 239.6)
- #8F5C31
#8F5C31
oklch(52.2% 0.089 59.1)
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 #337097, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Ocean Blue #03719C ΔE 0.022
- Sea Blue #047495 ΔE 0.024
- Dull Blue #49759C ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.029
- Metallic Blue #4F738E ΔE 0.034
- Denim #3B638C ΔE 0.038
- Cerulean #457B9D ΔE 0.039
Use #337097 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.