#1A64D0
Closest named color: Royal Blue (#4169E1). oklch(52.4% 0.181 259), rgb(26, 100, 208).
Aa
White text reads best on this color (5.55:1).
About this color
#1A64D0 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.181 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.044 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #1A64D0 |
| RGB | rgb(26, 100, 208) |
| HSL | hsl(216, 78%, 46%) |
| OKLCH | oklch(52.4% 0.181 259) |
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 #1A64D0 | 5.55:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #1A64D0 | 3.77:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #1A64D0 text on white | 5.55:1 | AA | Lc 77.1 | Fine for body text |
| #1A64D0 text on black | 3.77:1 | AA large text | Lc -24.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF8
oklch(88.6% 0.045 258.8)
-
Step 300
300
#A1C2F6
oklch(80.8% 0.082 259.4)
-
Step 400
400
#6DA1F1
oklch(70.7% 0.13 258.7)
-
Step 500
500
#4687EC
oklch(63.1% 0.166 259)
-
Step 600
600 (this color)
#1A64D0
oklch(52.4% 0.181 259)
-
Step 700
700
#185BBE
oklch(49.1% 0.169 259.1)
-
Step 800
800
#174B9A
oklch(42.7% 0.14 259.1)
-
Step 900
900
#19407A
oklch(37.8% 0.108 258.5)
-
Step 950
950
#102648
oklch(27.1% 0.069 258.9)
#1A64D0 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) | #1371D4 | 0.034 |
| Deuteranopia (no green cones) | #0061CE | 0.013 |
| Tritanopia (no blue cones) | #007F90 | 0.139 |
| Achromatopsia (no color) | #686868 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A64D0
#1A64D0
oklch(52.4% 0.181 259)
- #8B6100
#8B6100
oklch(52.3% 0.109 79.1)
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 #1A64D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.044
- Azul #1D5DEC ΔE 0.047
- Cerulean Blue #056EEE ΔE 0.050
- Mid Blue #276AB3 ΔE 0.051
- Warm Blue #4B57DB ΔE 0.051
- Neon Blue #4361EE ΔE 0.057
- Bright Blue #0165FC ΔE 0.067
- French Blue #436BAD ΔE 0.068
Use #1A64D0 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.