#0064D0
Closest named color: Azul (#1D5DEC). oklch(52.1% 0.185 257), rgb(0, 100, 208).
Aa
White text reads best on this color (5.62:1).
About this color
#0064D0 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.185 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.047 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #0064D0 |
| RGB | rgb(0, 100, 208) |
| HSL | hsl(211, 100%, 41%) |
| OKLCH | oklch(52.1% 0.185 257) |
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 #0064D0 | 5.62:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #0064D0 | 3.73:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #0064D0 text on white | 5.62:1 | AA | Lc 77.3 | Fine for body text |
| #0064D0 text on black | 3.73:1 | AA large text | Lc -24.5 | 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 700.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9CC3FA
oklch(80.9% 0.089 257)
-
Step 400
400
#64A2F8
oklch(70.8% 0.142 256.9)
-
Step 500
500
#3487F5
oklch(63.1% 0.183 257)
-
Step 600
600
#006EE3
oklch(55.7% 0.197 256.9)
-
Step 700
700 (this color)
#0064D0
oklch(52.1% 0.185 257)
-
Step 800
800
#004B9F
oklch(42.7% 0.151 256.9)
-
Step 900
900
#0E407F
oklch(37.8% 0.118 256.8)
-
Step 950
950
#0A264A
oklch(27% 0.075 256.3)
#0064D0 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) | #0F70D4 | 0.033 |
| Deuteranopia (no green cones) | #005FCE | 0.013 |
| Tritanopia (no blue cones) | #007F90 | 0.139 |
| Achromatopsia (no color) | #676767 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0064D0
#0064D0
oklch(52.1% 0.185 257)
- #8C5F00
#8C5F00
oklch(52% 0.109 76.6)
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 #0064D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.047
- Royal Blue #4169E1 ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.052
- Mid Blue #276AB3 ΔE 0.052
- Warm Blue #4B57DB ΔE 0.057
- Neon Blue #4361EE ΔE 0.062
- Bright Blue #0165FC ΔE 0.067
- French Blue #436BAD ΔE 0.072
Use #0064D0 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.