#0064BD
Closest named color: Mid Blue (#276AB3). oklch(50.6% 0.16 253.8), rgb(0, 100, 189).
Aa
White text reads best on this color (5.90:1).
About this color
#0064BD is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.160 and its hue 254°. 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 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #0064BD |
| RGB | rgb(0, 100, 189) |
| HSL | hsl(208, 100%, 37%) |
| OKLCH | oklch(50.6% 0.16 253.8) |
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 #0064BD | 5.90:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #0064BD | 3.55:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #0064BD text on white | 5.90:1 | AA | Lc 78.8 | Fine for body text |
| #0064BD text on black | 3.55:1 | AA large text | Lc -23.0 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9EC4F2
oklch(80.9% 0.077 253.5)
-
Step 400
400
#67A4EC
oklch(70.8% 0.124 253.5)
-
Step 500
500
#3A8BE6
oklch(63.2% 0.158 253.7)
-
Step 600
600
#0972D4
oklch(55.5% 0.172 253.9)
-
Step 700
700 (this color)
#0064BD
oklch(50.6% 0.16 253.8)
-
Step 800
800
#034E95
oklch(42.6% 0.133 253.9)
-
Step 900
900
#114276
oklch(37.7% 0.102 253.5)
-
Step 950
950
#0C2745
oklch(27% 0.065 253.3)
#0064BD 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) | #306CC0 | 0.034 |
| Deuteranopia (no green cones) | #005DBB | 0.019 |
| Tritanopia (no blue cones) | #007A87 | 0.119 |
| Achromatopsia (no color) | #646464 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0064BD
#0064BD
oklch(50.6% 0.16 253.8)
- #895A00
#895A00
oklch(50.7% 0.107 73.9)
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 #0064BD, 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 0.054
- Windows Blue #3778BF ΔE 0.066
- Peacock Blue #016795 ΔE 0.067
- Flat Blue #3C73A8 ΔE 0.069
- Ocean Blue #03719C ΔE 0.070
- Nice Blue #107AB0 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.071
Use #0064BD 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.