#376A9D
Closest named color: Muted Blue (#3B719F). oklch(51.3% 0.098 250.3), rgb(55, 106, 157).
Aa
White text reads best on this color (5.65:1).
About this color
#376A9D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.098 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.021 away. White text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #376A9D |
| RGB | rgb(55, 106, 157) |
| HSL | hsl(210, 48%, 42%) |
| OKLCH | oklch(51.3% 0.098 250.3) |
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 #376A9D | 5.65:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #376A9D | 3.71:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #376A9D text on white | 5.65:1 | AA | Lc 78.1 | Fine for body text |
| #376A9D text on black | 3.71:1 | AA large text | Lc -23.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#AAC4DF
oklch(81% 0.048 249.4)
-
Step 400
400
#7CA5CF
oklch(70.8% 0.076 249.5)
-
Step 500
500
#5A8DC2
oklch(63% 0.097 250.5)
-
Step 600
600
#3F77AF
oklch(55.7% 0.106 250.3)
-
Step 700
700 (this color)
#376A9D
oklch(51.3% 0.098 250.3)
-
Step 800
800
#29517A
oklch(42.6% 0.082 250.8)
-
Step 900
900
#264462
oklch(37.8% 0.063 249.8)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#376A9D 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) | #546C9F | 0.034 |
| Deuteranopia (no green cones) | #46639C | 0.023 |
| Tritanopia (no blue cones) | #00767C | 0.078 |
| Achromatopsia (no color) | #676767 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376A9D
#376A9D
oklch(51.3% 0.098 250.3)
- #8A5C1B
#8A5C1B
oklch(51.3% 0.098 70.8)
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 #376A9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.021
- French Blue #436BAD ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.030
- Denim #3B638C ΔE 0.030
- Ocean Blue #03719C ΔE 0.031
- Dusky Blue #475F94 ΔE 0.033
- Peacock Blue #016795 ΔE 0.035
- Mid Blue #276AB3 ΔE 0.036
Use #376A9D 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.