#37547B
Closest named color: Light Navy Blue (#2E5A88). oklch(44.1% 0.074 256.1), rgb(55, 84, 123).
Aa
White text reads best on this color (7.73:1).
About this color
#37547B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.074 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.025 away. White text reads best on it, at 7.73:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #37547B |
| RGB | rgb(55, 84, 123) |
| HSL | hsl(214, 38%, 35%) |
| OKLCH | oklch(44.1% 0.074 256.1) |
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 #37547B | 7.73:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #37547B | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #37547B text on white | 7.73:1 | AAA | Lc 86.7 | Fine for body text |
| #37547B text on black | 2.71:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC2DD
oklch(80.8% 0.044 257.1)
-
Step 400
400
#85A3CC
oklch(70.8% 0.069 256.3)
-
Step 500
500
#668BBE
oklch(63% 0.088 256.6)
-
Step 600
600
#4D75AA
oklch(55.6% 0.094 255.8)
-
Step 700
700
#3E6292
oklch(49.1% 0.088 256)
-
Step 800
800 (this color)
#37547B
oklch(44.1% 0.074 256.1)
-
Step 900
900
#2D4360
oklch(37.8% 0.057 255.7)
-
Step 950
950
#1B2738
oklch(27% 0.036 257.1)
#37547B 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) | #44567D | 0.019 |
| Deuteranopia (no green cones) | #3C507A | 0.012 |
| Tritanopia (no blue cones) | #115D62 | 0.065 |
| Achromatopsia (no color) | #535353 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37547B
#37547B
oklch(44.1% 0.074 256.1)
- #6A4D1F
#6A4D1F
oklch(44.2% 0.073 76.2)
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 #37547B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.025
- YInMn Blue #415A77 ΔE 0.026
- Dusk #4E5481 ΔE 0.033
- Dusk Blue #26538D ΔE 0.034
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.040
- Dusty Grape #545775 ΔE 0.043
Use #37547B 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.