#374483
Closest named color: Cobalt (#1E488F). oklch(40.9% 0.106 272.2), rgb(55, 68, 131).
Aa
White text reads best on this color (9.06:1).
About this color
#374483 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.106 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.032 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #374483 |
| RGB | rgb(55, 68, 131) |
| HSL | hsl(230, 41%, 36%) |
| OKLCH | oklch(40.9% 0.106 272.2) |
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 #374483 | 9.06:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #374483 | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #374483 text on white | 9.06:1 | AAA | Lc 90.6 | Preferred for body text |
| #374483 text on black | 2.31:1 | Fails | Lc -11.7 | 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
#E5E9F6
oklch(93.5% 0.018 272.3)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B2BFEA
oklch(80.9% 0.063 271.8)
-
Step 400
400
#8B9DDF
oklch(70.8% 0.099 272)
-
Step 500
500
#6F83D6
oklch(63.1% 0.127 272.1)
-
Step 600
600
#586BC3
oklch(55.6% 0.138 272.1)
-
Step 700
700
#4859A9
oklch(49.1% 0.129 271.9)
-
Step 800
800 (this color)
#374483
oklch(40.9% 0.106 272.2)
-
Step 900
900
#333E6D
oklch(37.8% 0.082 272)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#374483 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) | #274C85 | 0.027 |
| Deuteranopia (no green cones) | #1D4582 | 0.029 |
| Tritanopia (no blue cones) | #0A525D | 0.094 |
| Achromatopsia (no color) | #494949 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374483
#374483
oklch(40.9% 0.106 272.2)
- #5A4800
#5A4800
oklch(40.9% 0.084 92.4)
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 #374483, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.040
- Light Navy #155084 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.046
- Twilight #4E518B ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.056
Use #374483 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.