#1D5DEC
Named color: Azul. oklch(53.4% 0.225 262.9), rgb(29, 93, 236).
Aa
White text reads best on this color (5.48:1).
About this color
#1D5DEC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.225 and its hue 263°. Its hue sits on the cool side of the wheel. It is the named color Azul. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.225) |
| Temperature | cool |
| Nearest name | Azul |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #1D5DEC |
| RGB | rgb(29, 93, 236) |
| HSL | hsl(221, 84%, 52%) |
| OKLCH | oklch(53.4% 0.225 262.9) |
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 #1D5DEC | 5.48:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #1D5DEC | 3.82:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #1D5DEC text on white | 5.48:1 | AA | Lc 76.5 | Fine for body text |
| #1D5DEC text on black | 3.82:1 | AA large text | Lc -25.2 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4581FF
oklch(63.1% 0.198 262.9)
-
Step 600
600 (this color)
#1D5DEC
oklch(53.4% 0.225 262.9)
-
Step 700
700
#1852D4
oklch(49.1% 0.208 263)
-
Step 800
800
#1644AC
oklch(42.7% 0.174 263.1)
-
Step 900
900
#183B88
oklch(37.7% 0.135 263.1)
-
Step 950
950
#0F234F
oklch(26.9% 0.085 263.4)
#1D5DEC 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) | #0073F1 | 0.051 |
| Deuteranopia (no green cones) | #0060E9 | 0.011 |
| Tritanopia (no blue cones) | #00829C | 0.171 |
| Achromatopsia (no color) | #696969 | 0.225 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5DEC
#1D5DEC
oklch(53.4% 0.225 262.9)
- #8B6600
#8B6600
oklch(53.4% 0.11 83.5)
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 #1D5DEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Blue #0165FC ΔE 0.030
- Neon Blue #4361EE ΔE 0.034
- Electric Blue #0652FF ΔE 0.038
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.047
- Vibrant Blue #0339F8 ΔE 0.073
- Clear Blue #247AFD ΔE 0.074
Use #1D5DEC 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.