#1D4EDA
Closest named color: Blue Blue (#2242C7). oklch(49% 0.22 264.4), rgb(29, 78, 218).
Aa
White text reads best on this color (6.65:1).
About this color
#1D4EDA is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.220 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.040 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.220) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #1D4EDA |
| RGB | rgb(29, 78, 218) |
| HSL | hsl(224, 77%, 48%) |
| OKLCH | oklch(49% 0.22 264.4) |
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 #1D4EDA | 6.65:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #1D4EDA | 3.15:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #1D4EDA text on white | 6.65:1 | AA | Lc 82.0 | Fine for body text |
| #1D4EDA text on black | 3.15:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4B80FF
oklch(63.1% 0.197 264.4)
-
Step 600
600
#2961FA
oklch(55.6% 0.235 264.4)
-
Step 700
700 (this color)
#1D4EDA
oklch(49% 0.22 264.4)
-
Step 800
800
#1941B0
oklch(42.6% 0.182 264.5)
-
Step 900
900
#1A398B
oklch(37.6% 0.142 264.7)
-
Step 950
950
#0F2352
oklch(27.1% 0.09 264)
#1D4EDA 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) | #0065DE | 0.052 |
| Deuteranopia (no green cones) | #0054D7 | 0.015 |
| Tritanopia (no blue cones) | #00748D | 0.169 |
| Achromatopsia (no color) | #5C5C5C | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4EDA
#1D4EDA
oklch(49% 0.22 264.4)
- #7B5B00
#7B5B00
oklch(49.1% 0.101 84.7)
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 #1D4EDA, closest first.
No curated palette has a color within ΔE 0.04 of #1D4EDA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.040
- Azul #1D5DEC ΔE 0.044
- Warm Blue #4B57DB ΔE 0.053
- Electric Blue #0652FF ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.058
- Vibrant Blue #0339F8 ΔE 0.059
- Neon Blue #4361EE ΔE 0.068
- Light Royal Blue #3A2EFE ΔE 0.071
Use #1D4EDA 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.