#374DAD
Closest named color: Blueberry (#464196). oklch(45.9% 0.155 269.6), rgb(55, 77, 173).
Aa
White text reads best on this color (7.42:1).
About this color
#374DAD is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.155 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.048 away. White text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #374DAD |
| RGB | rgb(55, 77, 173) |
| HSL | hsl(229, 52%, 45%) |
| OKLCH | oklch(45.9% 0.155 269.6) |
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 #374DAD | 7.42:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #374DAD | 2.82:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #374DAD text on white | 7.42:1 | AAA | Lc 85.4 | Fine for body text |
| #374DAD text on black | 2.82:1 | Fails | Lc -16.6 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ADBFF2
oklch(80.9% 0.075 269.5)
-
Step 400
400
#839CEC
oklch(70.7% 0.121 269.9)
-
Step 500
500
#6582E6
oklch(63.2% 0.154 269.5)
-
Step 600
600
#4E69D4
oklch(55.7% 0.167 269.6)
-
Step 700
700 (this color)
#374DAD
oklch(45.9% 0.155 269.6)
-
Step 800
800
#344794
oklch(42.6% 0.128 269.8)
-
Step 900
900
#2D3D76
oklch(37.8% 0.099 269.4)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#374DAD 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) | #005BB0 | 0.044 |
| Deuteranopia (no green cones) | #0050AB | 0.036 |
| Tritanopia (no blue cones) | #006475 | 0.127 |
| Achromatopsia (no color) | #555555 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374DAD
#374DAD
oklch(45.9% 0.155 269.6)
- #6D5500
#6D5500
oklch(46.1% 0.094 89.7)
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 #374DAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.048
- Blue Blue #2242C7 ΔE 0.054
- Cobalt #1E488F ΔE 0.058
- Dusk Blue #26538D ΔE 0.059
- Sapphire #2138AB ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
Use #374DAD 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.