#3174CA
Closest named color: Windows Blue (#3778BF). oklch(56.1% 0.149 256.1), rgb(49, 116, 202).
Aa
White text reads best on this color (4.68:1).
About this color
#3174CA is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.149 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.023 away. White text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #3174CA |
| RGB | rgb(49, 116, 202) |
| HSL | hsl(214, 61%, 49%) |
| OKLCH | oklch(56.1% 0.149 256.1) |
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 #3174CA | 4.68:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #3174CA | 4.48:1 | AA large text | Lc 31.9 | Non-text elements, placeholder text |
| #3174CA text on white | 4.68:1 | AA | Lc 72.2 | Content text, not long reading |
| #3174CA text on black | 4.48:1 | AA large text | Lc -29.5 | 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 600.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A5C3EC
oklch(80.9% 0.067 256.3)
-
Step 400
400
#73A3E3
oklch(70.7% 0.108 255.9)
-
Step 500
500
#4E8ADB
oklch(63.1% 0.138 256.5)
-
Step 600
600 (this color)
#3174CA
oklch(56.1% 0.149 256.1)
-
Step 700
700
#2260AD
oklch(49.2% 0.138 255.9)
-
Step 800
800
#1E4E8C
oklch(42.6% 0.115 256.3)
-
Step 900
900
#1E4270
oklch(37.8% 0.089 255.7)
-
Step 950
950
#132742
oklch(27.1% 0.057 256.4)
#3174CA 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) | #497BCD | 0.031 |
| Deuteranopia (no green cones) | #2E6DC8 | 0.019 |
| Tritanopia (no blue cones) | #008895 | 0.114 |
| Achromatopsia (no color) | #747474 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3174CA
#3174CA
oklch(56.1% 0.149 256.1)
- #9B6900
#9B6900
oklch(55.9% 0.117 76.1)
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 #3174CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.023
- Mid Blue #276AB3 ΔE 0.044
- French Blue #436BAD ΔE 0.048
- Royal Blue #4169E1 ΔE 0.049
- Nice Blue #107AB0 ΔE 0.050
- Water Blue #0E87CC ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.053
- Steel Blue #4682B4 ΔE 0.061
Use #3174CA 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.