#2874C3
Closest named color: Windows Blue (#3778BF). oklch(55.3% 0.143 252.7), rgb(40, 116, 195).
Aa
White text reads best on this color (4.79:1).
About this color
#2874C3 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.143 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.018 away. White text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #2874C3 |
| RGB | rgb(40, 116, 195) |
| HSL | hsl(211, 66%, 46%) |
| OKLCH | oklch(55.3% 0.143 252.7) |
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 #2874C3 | 4.79:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #2874C3 | 4.37:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #2874C3 text on white | 4.79:1 | AA | Lc 72.9 | Content text, not long reading |
| #2874C3 text on black | 4.37:1 | AA large text | Lc -28.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C4EA
oklch(81% 0.064 253)
-
Step 400
400
#71A4DF
oklch(70.6% 0.103 252.8)
-
Step 500
500
#498CD6
oklch(63% 0.131 252.6)
-
Step 600
600 (this color)
#2874C3
oklch(55.3% 0.143 252.7)
-
Step 700
700
#1B62A9
oklch(49.2% 0.132 252.5)
-
Step 800
800
#195089
oklch(42.7% 0.11 252.7)
-
Step 900
900
#1C436E
oklch(37.8% 0.086 253)
-
Step 950
950
#112740
oklch(26.9% 0.055 253.1)
#2874C3 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) | #4E7AC6 | 0.039 |
| Deuteranopia (no green cones) | #336CC1 | 0.021 |
| Tritanopia (no blue cones) | #008792 | 0.107 |
| Achromatopsia (no color) | #727272 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2874C3
#2874C3
oklch(55.3% 0.143 252.7)
- #9C6600
#9C6600
oklch(55.5% 0.118 73)
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 #2874C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.018
- Mid Blue #276AB3 ΔE 0.035
- Nice Blue #107AB0 ΔE 0.039
- French Blue #436BAD ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.043
- Water Blue #0E87CC ΔE 0.051
- Muted Blue #3B719F ΔE 0.056
- Steel Blue #4682B4 ΔE 0.058
Use #2874C3 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.