#1D4CAC
Closest named color: Sapphire (#2138AB). oklch(44.5% 0.162 262.3), rgb(29, 76, 172).
Aa
White text reads best on this color (7.83:1).
About this color
#1D4CAC is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.162 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.047 away. White text reads best on it, at 7.83:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.68:1 |
| White text | 7.83:1 |
Values
| HEX | #1D4CAC |
| RGB | rgb(29, 76, 172) |
| HSL | hsl(220, 71%, 39%) |
| OKLCH | oklch(44.5% 0.162 262.3) |
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 #1D4CAC | 7.83:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #1D4CAC | 2.68:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #1D4CAC text on white | 7.83:1 | AAA | Lc 86.6 | Fine for body text |
| #1D4CAC text on black | 2.68:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6C9EFE
oklch(70.7% 0.151 262.4)
-
Step 500
500
#4582FD
oklch(63.1% 0.194 262.4)
-
Step 600
600
#2767EC
oklch(55.5% 0.211 262.5)
-
Step 700
700
#1A55CD
oklch(49.1% 0.196 262.3)
-
Step 800
800 (this color)
#1D4CAC
oklch(44.5% 0.162 262.3)
-
Step 900
900
#193C83
oklch(37.6% 0.127 262.4)
-
Step 950
950
#10244D
oklch(27% 0.08 262.7)
#1D4CAC 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) | #0059AF | 0.034 |
| Deuteranopia (no green cones) | #004CAA | 0.014 |
| Tritanopia (no blue cones) | #006474 | 0.126 |
| Achromatopsia (no color) | #525252 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4CAC
#1D4CAC
oklch(44.5% 0.162 262.3)
- #6D4E00
#6D4E00
oklch(44.6% 0.092 82.2)
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 #1D4CAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.047
- Cobalt #1E488F ΔE 0.048
- Blue Blue #2242C7 ΔE 0.048
- Dusk Blue #26538D ΔE 0.057
- Blueberry #464196 ΔE 0.059
- Light Navy #155084 ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.069
- Denim Blue #3B5B92 ΔE 0.071
Use #1D4CAC 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.