#37628A
Closest named color: Denim (#3B638C). oklch(48.3% 0.081 248.2), rgb(55, 98, 138).
Aa
White text reads best on this color (6.40:1).
About this color
#37628A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.081 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.006 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #37628A |
| RGB | rgb(55, 98, 138) |
| HSL | hsl(209, 43%, 38%) |
| OKLCH | oklch(48.3% 0.081 248.2) |
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 #37628A | 6.40:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #37628A | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #37628A text on white | 6.40:1 | AA | Lc 81.7 | Fine for body text |
| #37628A text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#82A5C6
oklch(70.8% 0.062 247.2)
-
Step 500
500
#628EB8
oklch(63.2% 0.08 248.1)
-
Step 600
600
#4877A4
oklch(55.5% 0.087 248.7)
-
Step 700
700 (this color)
#37628A
oklch(48.3% 0.081 248.2)
-
Step 800
800
#305272
oklch(42.7% 0.067 248.2)
-
Step 900
900
#2B445C
oklch(37.7% 0.052 248.4)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#37628A 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) | #51638C | 0.032 |
| Deuteranopia (no green cones) | #465B89 | 0.025 |
| Tritanopia (no blue cones) | #006B70 | 0.066 |
| Achromatopsia (no color) | #5F5F5F | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37628A
#37628A
oklch(48.3% 0.081 248.2)
- #7C5527
#7C5527
oklch(48.2% 0.081 68.2)
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 #37628A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.006
- Light Navy Blue #2E5A88 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.027
- Dusky Blue #475F94 ΔE 0.027
- Peacock Blue #016795 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.034
- Dusk #4E5481 ΔE 0.045
- Ocean Blue #03719C ΔE 0.049
Use #37628A 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.