#376D88
Closest named color: Sea Blue (#047495). oklch(50.9% 0.072 232.3), rgb(55, 109, 136).
Aa
White text reads best on this color (5.66:1).
About this color
#376D88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.072 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.031 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #376D88 |
| RGB | rgb(55, 109, 136) |
| HSL | hsl(200, 42%, 37%) |
| OKLCH | oklch(50.9% 0.072 232.3) |
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 #376D88 | 5.66:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #376D88 | 3.70:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #376D88 text on white | 5.66:1 | AA | Lc 78.2 | Fine for body text |
| #376D88 text on black | 3.70:1 | AA large text | Lc -23.6 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D3
oklch(80.8% 0.034 231.3)
-
Step 400
400
#7EA7BE
oklch(70.7% 0.056 233.1)
-
Step 500
500
#5C91AD
oklch(63% 0.07 232.5)
-
Step 600
600
#407B99
oklch(55.6% 0.077 232.6)
-
Step 700
700 (this color)
#376D88
oklch(50.9% 0.072 232.3)
-
Step 800
800
#2A556A
oklch(42.8% 0.059 231.6)
-
Step 900
900
#274656
oklch(37.7% 0.046 232.3)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#376D88 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) | #606C89 | 0.048 |
| Deuteranopia (no green cones) | #546388 | 0.042 |
| Tritanopia (no blue cones) | #007476 | 0.050 |
| Achromatopsia (no color) | #676767 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376D88
#376D88
oklch(50.9% 0.072 232.3)
- #875A3E
#875A3E
oklch(51% 0.072 52.3)
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 #376D88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.031
- Denim #3B638C ΔE 0.033
- Metallic Blue #4F738E ΔE 0.034
- Ocean Blue #03719C ΔE 0.037
- Muted Blue #3B719F ΔE 0.037
- Slate #516572 ΔE 0.042
- Dull Blue #49759C ΔE 0.043
- Peacock Blue #016795 ΔE 0.043
Use #376D88 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.