#374886
Closest named color: Cobalt (#1E488F). oklch(42% 0.105 269.9), rgb(55, 72, 134).
Aa
White text reads best on this color (8.62:1).
About this color
#374886 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.105 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.030 away. White text reads best on it, at 8.62:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #374886 |
| RGB | rgb(55, 72, 134) |
| HSL | hsl(227, 42%, 37%) |
| OKLCH | oklch(42% 0.105 269.9) |
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 #374886 | 8.62:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #374886 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #374886 text on white | 8.62:1 | AAA | Lc 89.4 | Fine for body text |
| #374886 text on black | 2.43:1 | Fails | Lc -12.8 | Not readable |
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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B1BFE9
oklch(80.8% 0.061 270.5)
-
Step 400
400
#889EDE
oklch(70.7% 0.097 269.3)
-
Step 500
500
#6C84D5
oklch(63.1% 0.125 270)
-
Step 600
600
#546CC3
oklch(55.5% 0.138 269.9)
-
Step 700
700
#455AA8
oklch(49.1% 0.127 269.9)
-
Step 800
800 (this color)
#374886
oklch(42% 0.105 269.9)
-
Step 900
900
#313E6D
oklch(37.7% 0.082 270.4)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#374886 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) | #2C4F88 | 0.022 |
| Deuteranopia (no green cones) | #214885 | 0.025 |
| Tritanopia (no blue cones) | #015660 | 0.095 |
| Achromatopsia (no color) | #4C4C4C | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374886
#374886
oklch(42% 0.105 269.9)
- #5F4A00
#5F4A00
oklch(41.9% 0.086 90)
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 #374886, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.030
- Dusk Blue #26538D ΔE 0.034
- Light Navy #155084 ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.040
- Twilight #4E518B ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
Use #374886 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.