#1D6DEB
Closest named color: Cerulean Blue (#056EEE). oklch(56.4% 0.205 259.9), rgb(29, 109, 235).
Aa
White text reads best on this color (4.73:1).
About this color
#1D6DEB is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.205 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.008 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #1D6DEB |
| RGB | rgb(29, 109, 235) |
| HSL | hsl(217, 84%, 52%) |
| OKLCH | oklch(56.4% 0.205 259.9) |
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 #1D6DEB | 4.73:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #1D6DEB | 4.43:1 | AA large text | Lc 32.0 | Non-text elements, placeholder text |
| #1D6DEB text on white | 4.73:1 | AA | Lc 72.1 | Content text, not long reading |
| #1D6DEB text on black | 4.43:1 | AA large text | Lc -29.6 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FD
oklch(80.9% 0.093 260.1)
-
Step 400
400
#68A0FC
oklch(70.8% 0.148 259.9)
-
Step 500
500
#3E84F9
oklch(63% 0.189 260.1)
-
Step 600
600 (this color)
#1D6DEB
oklch(56.4% 0.205 259.9)
-
Step 700
700
#0B58CA
oklch(49.2% 0.19 259.9)
-
Step 800
800
#0E48A3
oklch(42.6% 0.158 260)
-
Step 900
900
#153E81
oklch(37.7% 0.122 259.9)
-
Step 950
950
#0D254C
oklch(27% 0.078 259.7)
#1D6DEB 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) | #007DEF | 0.039 |
| Deuteranopia (no green cones) | #006BE9 | 0.011 |
| Tritanopia (no blue cones) | #008CA1 | 0.156 |
| Achromatopsia (no color) | #737373 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D6DEB
#1D6DEB
oklch(56.4% 0.205 259.9)
- #996C00
#996C00
oklch(56.3% 0.117 79.8)
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 #1D6DEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.008
- Royal Blue #4169E1 ΔE 0.028
- Bright Blue #0165FC ΔE 0.034
- Neon Blue #4361EE ΔE 0.035
- Azul #1D5DEC ΔE 0.038
- Clear Blue #247AFD ΔE 0.042
- Warm Blue #4B57DB ΔE 0.061
- Electric Blue #0652FF ΔE 0.069
Use #1D6DEB 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.