#2A73C8
Closest named color: Windows Blue (#3778BF). oklch(55.5% 0.15 254.8), rgb(42, 115, 200).
Aa
White text reads best on this color (4.78:1).
About this color
#2A73C8 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.150 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.024 away. White text reads best on it, at 4.78:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.38:1 |
| White text | 4.78:1 |
Values
| HEX | #2A73C8 |
| RGB | rgb(42, 115, 200) |
| HSL | hsl(212, 65%, 47%) |
| OKLCH | oklch(55.5% 0.15 254.8) |
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 #2A73C8 | 4.78:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #2A73C8 | 4.38:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #2A73C8 text on white | 4.78:1 | AA | Lc 72.8 | Content text, not long reading |
| #2A73C8 text on black | 4.38:1 | AA large text | Lc -28.9 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A3C3EC
oklch(80.8% 0.068 254.8)
-
Step 400
400
#71A3E3
oklch(70.6% 0.109 255)
-
Step 500
500
#4A8BDB
oklch(63.1% 0.138 254.8)
-
Step 600
600 (this color)
#2A73C8
oklch(55.5% 0.15 254.8)
-
Step 700
700
#1C60AD
oklch(49% 0.14 254.8)
-
Step 800
800
#1A4F8C
oklch(42.7% 0.115 254.6)
-
Step 900
900
#1C4270
oklch(37.7% 0.09 254.8)
-
Step 950
950
#112742
oklch(27% 0.058 254.7)
#2A73C8 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) | #487ACB | 0.034 |
| Deuteranopia (no green cones) | #2B6CC6 | 0.019 |
| Tritanopia (no blue cones) | #008794 | 0.113 |
| Achromatopsia (no color) | #727272 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A73C8
#2A73C8
oklch(55.5% 0.15 254.8)
- #9B6700
#9B6700
oklch(55.5% 0.117 74.4)
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 #2A73C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.024
- Mid Blue #276AB3 ΔE 0.039
- French Blue #436BAD ΔE 0.046
- Nice Blue #107AB0 ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.051
- Water Blue #0E87CC ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.062
Use #2A73C8 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.