#376E90
Closest named color: Muted Blue (#3B719F). oklch(51.6% 0.079 238.1), rgb(55, 110, 144).
Aa
White text reads best on this color (5.53:1).
About this color
#376E90 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.079 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.025 away. White text reads best on it, at 5.53:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #376E90 |
| RGB | rgb(55, 110, 144) |
| HSL | hsl(203, 45%, 39%) |
| OKLCH | oklch(51.6% 0.079 238.1) |
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 #376E90 | 5.53:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #376E90 | 3.79:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #376E90 text on white | 5.53:1 | AA | Lc 77.5 | Fine for body text |
| #376E90 text on black | 3.79:1 | AA large text | Lc -24.3 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7DA7C3
oklch(70.8% 0.061 237.9)
-
Step 500
500
#5A90B4
oklch(63% 0.079 239)
-
Step 600
600
#3E7A9F
oklch(55.5% 0.085 238)
-
Step 700
700 (this color)
#376E90
oklch(51.6% 0.079 238.1)
-
Step 800
800
#29546F
oklch(42.7% 0.066 238.5)
-
Step 900
900
#26455A
oklch(37.6% 0.052 239.7)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#376E90 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) | #5E6E92 | 0.045 |
| Deuteranopia (no green cones) | #52658F | 0.037 |
| Tritanopia (no blue cones) | #007779 | 0.059 |
| Achromatopsia (no color) | #686868 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376E90
#376E90
oklch(51.6% 0.079 238.1)
- #8A5C37
#8A5C37
oklch(51.6% 0.08 58.6)
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 #376E90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.025
- Sea Blue #047495 ΔE 0.027
- Ocean Blue #03719C ΔE 0.029
- Metallic Blue #4F738E ΔE 0.031
- Denim #3B638C ΔE 0.032
- Dull Blue #49759C ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.039
- Peacock Blue #016795 ΔE 0.040
Use #376E90 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.