#1A73DF
Closest named color: Cerulean Blue (#056EEE). oklch(56.7% 0.183 256.7), rgb(26, 115, 223).
Aa
White text reads best on this color (4.60:1).
About this color
#1A73DF is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.183 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.028 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #1A73DF |
| RGB | rgb(26, 115, 223) |
| HSL | hsl(213, 79%, 49%) |
| OKLCH | oklch(56.7% 0.183 256.7) |
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 #1A73DF | 4.60:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #1A73DF | 4.56:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #1A73DF text on white | 4.60:1 | AA | Lc 71.3 | Content text, not long reading |
| #1A73DF text on black | 4.56:1 | AA | Lc -30.3 | Non-text elements, placeholder text |
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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9EC3F6
oklch(80.9% 0.083 256.5)
-
Step 400
400
#68A2F1
oklch(70.6% 0.132 256.5)
-
Step 500
500
#3D88ED
oklch(63.1% 0.169 256.9)
-
Step 600
600 (this color)
#1A73DF
oklch(56.7% 0.183 256.7)
-
Step 700
700
#035DBE
oklch(49.2% 0.169 256.5)
-
Step 800
800
#0B4C9A
oklch(42.7% 0.141 256.8)
-
Step 900
900
#14407A
oklch(37.6% 0.11 256.9)
-
Step 950
950
#0D2648
oklch(27% 0.07 257)
#1A73DF 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) | #317EE3 | 0.034 |
| Deuteranopia (no green cones) | #006DDD | 0.019 |
| Tritanopia (no blue cones) | #008D9E | 0.138 |
| Achromatopsia (no color) | #757575 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A73DF
#1A73DF
oklch(56.7% 0.183 256.7)
- #9D6B00
#9D6B00
oklch(56.6% 0.119 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 #1A73DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.028
- Royal Blue #4169E1 ΔE 0.033
- Clear Blue #247AFD ΔE 0.049
- Neon Blue #4361EE ΔE 0.054
- Windows Blue #3778BF ΔE 0.055
- Bright Blue #0165FC ΔE 0.058
- Azul #1D5DEC ΔE 0.058
- Water Blue #0E87CC ΔE 0.066
Use #1A73DF 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.