#374EAF
Closest named color: Blueberry (#464196). oklch(46.3% 0.157 269.3), rgb(55, 78, 175).
Aa
White text reads best on this color (7.31:1).
About this color
#374EAF is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.157 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.052 away. White text reads best on it, at 7.31:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #374EAF |
| RGB | rgb(55, 78, 175) |
| HSL | hsl(229, 52%, 45%) |
| OKLCH | oklch(46.3% 0.157 269.3) |
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 #374EAF | 7.31:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #374EAF | 2.87:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #374EAF text on white | 7.31:1 | AAA | Lc 85.0 | Fine for body text |
| #374EAF text on black | 2.87:1 | Fails | Lc -17.0 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ADBFF3
oklch(80.9% 0.076 269.8)
-
Step 400
400
#829CEC
oklch(70.6% 0.121 269.4)
-
Step 500
500
#6482E6
oklch(63.1% 0.154 269.1)
-
Step 600
600
#4D69D5
oklch(55.7% 0.169 269.3)
-
Step 700
700 (this color)
#374EAF
oklch(46.3% 0.157 269.3)
-
Step 800
800
#334795
oklch(42.6% 0.13 269.4)
-
Step 900
900
#2C3D77
oklch(37.8% 0.101 268.9)
-
Step 950
950
#1A2446
oklch(27.1% 0.065 269.4)
#374EAF 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) | #005CB2 | 0.044 |
| Deuteranopia (no green cones) | #0051AD | 0.036 |
| Tritanopia (no blue cones) | #006577 | 0.127 |
| Achromatopsia (no color) | #565656 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374EAF
#374EAF
oklch(46.3% 0.157 269.3)
- #6E5500
#6E5500
oklch(46.2% 0.094 88.9)
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 #374EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.052
- Blue Blue #2242C7 ΔE 0.053
- Dusk Blue #26538D ΔE 0.061
- Cobalt #1E488F ΔE 0.062
- Sapphire #2138AB ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.063
Use #374EAF 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.