#1D6ADD
Closest named color: Royal Blue (#4169E1). oklch(54.7% 0.191 259.2), rgb(29, 106, 221).
Aa
White text reads best on this color (5.05:1).
About this color
#1D6ADD is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.191 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.027 away. White text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #1D6ADD |
| RGB | rgb(29, 106, 221) |
| HSL | hsl(216, 77%, 49%) |
| OKLCH | oklch(54.7% 0.191 259.2) |
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 #1D6ADD | 5.05:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #1D6ADD | 4.15:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #1D6ADD text on white | 5.05:1 | AA | Lc 74.2 | Content text, not long reading |
| #1D6ADD text on black | 4.15:1 | AA large text | Lc -27.5 | 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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DBF9
oklch(88.6% 0.047 258.4)
-
Step 300
300
#A0C2F8
oklch(80.9% 0.085 259.5)
-
Step 400
400
#6BA1F5
oklch(70.8% 0.136 258.9)
-
Step 500
500
#4286F1
oklch(63.1% 0.175 259.2)
-
Step 600
600 (this color)
#1D6ADD
oklch(54.7% 0.191 259.2)
-
Step 700
700
#125AC3
oklch(49.1% 0.178 259.2)
-
Step 800
800
#134A9D
oklch(42.6% 0.147 259.3)
-
Step 900
900
#173F7D
oklch(37.7% 0.115 259.2)
-
Step 950
950
#0F2549
oklch(26.9% 0.073 259.8)
#1D6ADD 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) | #1178E1 | 0.035 |
| Deuteranopia (no green cones) | #0067DB | 0.013 |
| Tritanopia (no blue cones) | #008699 | 0.145 |
| Achromatopsia (no color) | #6F6F6F | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D6ADD
#1D6ADD
oklch(54.7% 0.191 259.2)
- #946700
#946700
oklch(54.7% 0.114 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 #1D6ADD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.027
- Cerulean Blue #056EEE ΔE 0.027
- Azul #1D5DEC ΔE 0.039
- Neon Blue #4361EE ΔE 0.043
- Bright Blue #0165FC ΔE 0.049
- Warm Blue #4B57DB ΔE 0.053
- Clear Blue #247AFD ΔE 0.062
- Mid Blue #276AB3 ΔE 0.065
Use #1D6ADD 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.