#374DC0
Closest named color: Blue Blue (#2242C7). oklch(47.5% 0.181 269.8), rgb(55, 77, 192).
Aa
White text reads best on this color (7.03:1).
About this color
#374DC0 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.181 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.037 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #374DC0 |
| RGB | rgb(55, 77, 192) |
| HSL | hsl(230, 55%, 48%) |
| OKLCH | oklch(47.5% 0.181 269.8) |
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 #374DC0 | 7.03:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #374DC0 | 2.98:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #374DC0 text on white | 7.03:1 | AAA | Lc 83.8 | Fine for body text |
| #374DC0 text on black | 2.98:1 | Fails | Lc -18.1 | 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 700.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABEFA
oklch(80.8% 0.088 270.1)
-
Step 400
400
#7E9BF8
oklch(70.8% 0.14 269.5)
-
Step 500
500
#607EF4
oklch(63% 0.179 269.9)
-
Step 600
600
#4964E3
oklch(55.6% 0.195 269.8)
-
Step 700
700 (this color)
#374DC0
oklch(47.5% 0.181 269.8)
-
Step 800
800
#3044A0
oklch(42.7% 0.151 269.6)
-
Step 900
900
#2A3A7F
oklch(37.6% 0.118 270)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#374DC0 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) | #005FC4 | 0.049 |
| Deuteranopia (no green cones) | #0053BE | 0.035 |
| Tritanopia (no blue cones) | #006A7F | 0.145 |
| Achromatopsia (no color) | #595959 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374DC0
#374DC0
oklch(47.5% 0.181 269.8)
- #725900
#725900
oklch(47.6% 0.097 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 #374DC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.037
- Majorelle Blue #3F37C9 ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.056
- Blurple #5539CC ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.065
- Sapphire #2138AB ΔE 0.068
- Iris #6258C4 ΔE 0.069
Use #374DC0 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.