#1D4FC4
Closest named color: Blue Blue (#2242C7). oklch(47.2% 0.191 263.4), rgb(29, 79, 196).
Aa
White text reads best on this color (7.07:1).
About this color
#1D4FC4 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.191 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.029 away. White text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #1D4FC4 |
| RGB | rgb(29, 79, 196) |
| HSL | hsl(222, 74%, 44%) |
| OKLCH | oklch(47.2% 0.191 263.4) |
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 #1D4FC4 | 7.07:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #1D4FC4 | 2.96:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #1D4FC4 text on white | 7.07:1 | AAA | Lc 83.8 | Fine for body text |
| #1D4FC4 text on black | 2.96:1 | Fails | Lc -18.2 | 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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFC
oklch(88.6% 0.051 263.2)
-
Step 300
300
#A2C1FD
oklch(81% 0.092 263.3)
-
Step 400
400
#709EFC
oklch(70.8% 0.147 263.4)
-
Step 500
500
#4B82FA
oklch(63.2% 0.189 263.4)
-
Step 600
600
#2F68E9
oklch(55.7% 0.205 263.3)
-
Step 700
700 (this color)
#1D4FC4
oklch(47.2% 0.191 263.4)
-
Step 800
800
#1E46A4
oklch(42.7% 0.159 263.6)
-
Step 900
900
#1D3C82
oklch(37.6% 0.124 263.6)
-
Step 950
950
#11244C
oklch(27% 0.078 263.1)
#1D4FC4 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) | #0060C8 | 0.041 |
| Deuteranopia (no green cones) | #0051C2 | 0.012 |
| Tritanopia (no blue cones) | #006D82 | 0.146 |
| Achromatopsia (no color) | #585858 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4FC4
#1D4FC4
oklch(47.2% 0.191 263.4)
- #755500
#755500
oklch(47.1% 0.097 83.2)
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 #1D4FC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.029
- Majorelle Blue #3F37C9 ΔE 0.054
- Warm Blue #4B57DB ΔE 0.065
- Sapphire #2138AB ΔE 0.067
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
- Azul #1D5DEC ΔE 0.071
- Blurple #5539CC ΔE 0.074
- Mid Blue #276AB3 ΔE 0.080
Use #1D4FC4 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.