#376B8D
Closest named color: Denim (#3B638C). oklch(50.7% 0.078 239.5), rgb(55, 107, 141).
Aa
White text reads best on this color (5.75:1).
About this color
#376B8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.078 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.024 away. White text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.65:1 |
| White text | 5.75:1 |
Values
| HEX | #376B8D |
| RGB | rgb(55, 107, 141) |
| HSL | hsl(204, 44%, 38%) |
| OKLCH | oklch(50.7% 0.078 239.5) |
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 #376B8D | 5.75:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #376B8D | 3.65:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #376B8D text on white | 5.75:1 | AA | Lc 78.6 | Fine for body text |
| #376B8D text on black | 3.65:1 | AA large text | Lc -23.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D7
oklch(81% 0.038 238.2)
-
Step 400
400
#7EA6C3
oklch(70.6% 0.061 240.2)
-
Step 500
500
#5C90B3
oklch(63.1% 0.077 239.1)
-
Step 600
600
#417A9F
oklch(55.7% 0.083 239.1)
-
Step 700
700 (this color)
#376B8D
oklch(50.7% 0.078 239.5)
-
Step 800
800
#2B546F
oklch(42.8% 0.064 239.5)
-
Step 900
900
#27455A
oklch(37.7% 0.051 240.5)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#376B8D 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) | #5C6B8F | 0.044 |
| Deuteranopia (no green cones) | #50628C | 0.036 |
| Tritanopia (no blue cones) | #007476 | 0.060 |
| Achromatopsia (no color) | #666666 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376B8D
#376B8D
oklch(50.7% 0.078 239.5)
- #865A35
#865A35
oklch(50.7% 0.078 59.8)
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 #376B8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.024
- Muted Blue #3B719F ΔE 0.031
- Sea Blue #047495 ΔE 0.033
- Ocean Blue #03719C ΔE 0.033
- Peacock Blue #016795 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.038
- Dull Blue #49759C ΔE 0.041
- Dusky Blue #475F94 ΔE 0.042
Use #376B8D 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.