#374291
Closest named color: Blueberry (#464196). oklch(41.5% 0.13 273.4), rgb(55, 66, 145).
Aa
White text reads best on this color (8.93:1).
About this color
#374291 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.130 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.024 away. White text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #374291 |
| RGB | rgb(55, 66, 145) |
| HSL | hsl(233, 45%, 39%) |
| OKLCH | oklch(41.5% 0.13 273.4) |
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 #374291 | 8.93:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #374291 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #374291 text on white | 8.93:1 | AAA | Lc 90.2 | Preferred for body text |
| #374291 text on black | 2.35:1 | Fails | Lc -12.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B0BEF2
oklch(80.9% 0.075 272.9)
-
Step 400
400
#889AEC
oklch(70.6% 0.122 273.5)
-
Step 500
500
#6D7FE6
oklch(63.1% 0.155 273.7)
-
Step 600
600
#5666D4
oklch(55.6% 0.168 273.4)
-
Step 700
700
#4754B8
oklch(49.1% 0.157 273.6)
-
Step 800
800 (this color)
#374291
oklch(41.5% 0.13 273.4)
-
Step 900
900
#313B76
oklch(37.6% 0.101 273.4)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#374291 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) | #104E94 | 0.043 |
| Deuteranopia (no green cones) | #00468F | 0.043 |
| Tritanopia (no blue cones) | #005463 | 0.111 |
| Achromatopsia (no color) | #494949 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374291
#374291
oklch(41.5% 0.13 273.4)
- #5B4A00
#5B4A00
oklch(41.5% 0.085 93.8)
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 #374291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.024
- Dark Slate Blue #483D8B ΔE 0.028
- Cobalt #1E488F ΔE 0.030
- Dusk Blue #26538D ΔE 0.049
- Light Navy #155084 ΔE 0.054
- Sapphire #2138AB ΔE 0.057
- Twilight #4E518B ΔE 0.059
- Twilight Blue #0A437A ΔE 0.059
Use #374291 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.