#376DA5
Closest named color: Muted Blue (#3B719F). oklch(52.4% 0.106 251.3), rgb(55, 109, 165).
Aa
White text reads best on this color (5.39:1).
About this color
#376DA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.106 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.017 away. White text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #376DA5 |
| RGB | rgb(55, 109, 165) |
| HSL | hsl(211, 50%, 43%) |
| OKLCH | oklch(52.4% 0.106 251.3) |
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 #376DA5 | 5.39:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #376DA5 | 3.89:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #376DA5 text on white | 5.39:1 | AA | Lc 76.7 | Fine for body text |
| #376DA5 text on black | 3.89:1 | AA large text | Lc -25.1 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3DF
oklch(80.8% 0.048 252.4)
-
Step 400
400
#7DA4CF
oklch(70.6% 0.076 251.4)
-
Step 500
500
#5B8DC3
oklch(63.1% 0.098 251.4)
-
Step 600
600 (this color)
#376DA5
oklch(52.4% 0.106 251.3)
-
Step 700
700
#326397
oklch(49.1% 0.099 251.7)
-
Step 800
800
#2A517A
oklch(42.6% 0.082 251.3)
-
Step 900
900
#274362
oklch(37.6% 0.063 252.1)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#376DA5 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) | #5470A7 | 0.034 |
| Deuteranopia (no green cones) | #4565A4 | 0.025 |
| Tritanopia (no blue cones) | #007A81 | 0.083 |
| Achromatopsia (no color) | #6A6A6A | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376DA5
#376DA5
oklch(52.4% 0.106 251.3)
- #905E12
#905E12
oklch(52.4% 0.106 71)
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 #376DA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.017
- Flat Blue #3C73A8 ΔE 0.019
- French Blue #436BAD ΔE 0.019
- Mid Blue #276AB3 ΔE 0.028
- Ocean Blue #03719C ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Nice Blue #107AB0 ΔE 0.039
- Dusky Blue #475F94 ΔE 0.044
Use #376DA5 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.