#2564C1
Closest named color: Mid Blue (#276AB3). oklch(51.6% 0.159 258.6), rgb(37, 100, 193).
Aa
White text reads best on this color (5.71:1).
About this color
#2564C1 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.159 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.030 away. White text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #2564C1 |
| RGB | rgb(37, 100, 193) |
| HSL | hsl(216, 68%, 45%) |
| OKLCH | oklch(51.6% 0.159 258.6) |
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 #2564C1 | 5.71:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #2564C1 | 3.67:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #2564C1 text on white | 5.71:1 | AA | Lc 78.1 | Fine for body text |
| #2564C1 text on black | 3.67:1 | AA large text | Lc -23.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF6
oklch(88.6% 0.043 257.1)
-
Step 300
300
#A3C2F3
oklch(80.9% 0.077 259.4)
-
Step 400
400
#70A1ED
oklch(70.6% 0.124 258.9)
-
Step 500
500
#4988E7
oklch(63.1% 0.158 258.5)
-
Step 600
600
#2A6FD5
oklch(55.5% 0.172 258.6)
-
Step 700
700 (this color)
#2564C1
oklch(51.6% 0.159 258.6)
-
Step 800
800
#1A4C96
oklch(42.7% 0.133 258.6)
-
Step 900
900
#1C4077
oklch(37.7% 0.103 258.8)
-
Step 950
950
#112646
oklch(27% 0.066 258.6)
#2564C1 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) | #2E6EC4 | 0.029 |
| Deuteranopia (no green cones) | #0060BF | 0.020 |
| Tritanopia (no blue cones) | #007A89 | 0.122 |
| Achromatopsia (no color) | #666666 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2564C1
#2564C1
oklch(51.6% 0.159 258.6)
- #895F00
#895F00
oklch(51.7% 0.108 78.6)
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 #2564C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.030
- French Blue #436BAD ΔE 0.048
- Royal Blue #4169E1 ΔE 0.058
- Windows Blue #3778BF ΔE 0.060
- Warm Blue #4B57DB ΔE 0.062
- Flat Blue #3C73A8 ΔE 0.067
- Azul #1D5DEC ΔE 0.069
- Iris #6258C4 ΔE 0.070
Use #2564C1 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.