#1D44AD
Closest named color: Sapphire (#2138AB). oklch(43% 0.174 264.5), rgb(29, 68, 173).
Aa
White text reads best on this color (8.45:1).
About this color
#1D44AD is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.174 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.027 away. White text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #1D44AD |
| RGB | rgb(29, 68, 173) |
| HSL | hsl(224, 71%, 40%) |
| OKLCH | oklch(43% 0.174 264.5) |
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 #1D44AD | 8.45:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #1D44AD | 2.48:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #1D44AD text on white | 8.45:1 | AAA | Lc 88.5 | Fine for body text |
| #1D44AD text on black | 2.48:1 | Fails | Lc -13.7 | Not readable |
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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
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
#2D63F4
oklch(55.6% 0.225 264.5)
-
Step 700
700
#2150D5
oklch(49% 0.21 264.6)
-
Step 800
800 (this color)
#1D44AD
oklch(43% 0.174 264.5)
-
Step 900
900
#1C3A88
oklch(37.6% 0.135 264.7)
-
Step 950
950
#112350
oklch(27.1% 0.086 264.8)
#1D44AD 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) | #0054B0 | 0.040 |
| Deuteranopia (no green cones) | #0047AB | 0.015 |
| Tritanopia (no blue cones) | #005F72 | 0.134 |
| Achromatopsia (no color) | #4D4D4D | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D44AD
#1D44AD
oklch(43% 0.174 264.5)
- #664B00
#664B00
oklch(43% 0.088 84.8)
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 #1D44AD, closest first.
No curated palette has a color within ΔE 0.04 of #1D44AD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.027
- Blue Blue #2242C7 ΔE 0.042
- Cobalt #1E488F ΔE 0.051
- Blueberry #464196 ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.061
- Dusk Blue #26538D ΔE 0.070
- Dark Slate Blue #483D8B ΔE 0.075
- Light Navy #155084 ΔE 0.078
Use #1D44AD 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.