#374DA6
Closest named color: Blueberry (#464196). oklch(45.4% 0.145 269.4), rgb(55, 77, 166).
Aa
White text reads best on this color (7.56:1).
About this color
#374DA6 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.145 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.041 away. White text reads best on it, at 7.56:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #374DA6 |
| RGB | rgb(55, 77, 166) |
| HSL | hsl(228, 50%, 43%) |
| OKLCH | oklch(45.4% 0.145 269.4) |
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 #374DA6 | 7.56:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #374DA6 | 2.77:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #374DA6 text on white | 7.56:1 | AAA | Lc 86.0 | Fine for body text |
| #374DA6 text on black | 2.77:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD8F9
oklch(88.4% 0.047 269.6)
-
Step 300
300
#AABFF8
oklch(80.9% 0.084 268.8)
-
Step 400
400
#7F9BF5
oklch(70.7% 0.136 269.6)
-
Step 500
500
#607FF1
oklch(63% 0.174 269.5)
-
Step 600
600
#4965E0
oklch(55.5% 0.189 269.6)
-
Step 700
700
#3B53C2
oklch(49% 0.175 269.6)
-
Step 800
800 (this color)
#374DA6
oklch(45.4% 0.145 269.4)
-
Step 900
900
#2A3B7D
oklch(37.7% 0.114 269.4)
-
Step 950
950
#192349
oklch(27% 0.072 270)
#374DA6 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) | #1159A9 | 0.039 |
| Deuteranopia (no green cones) | #004FA4 | 0.037 |
| Tritanopia (no blue cones) | #006272 | 0.120 |
| Achromatopsia (no color) | #545454 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374DA6
#374DA6
oklch(45.4% 0.145 269.4)
- #6B5300
#6B5300
oklch(45.4% 0.093 89.3)
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 #374DA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.041
- Cobalt #1E488F ΔE 0.049
- Dusk Blue #26538D ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.055
- Twilight #4E518B ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.059
- Sapphire #2138AB ΔE 0.061
- Blue Blue #2242C7 ΔE 0.064
Use #374DA6 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.