#1D4EBD
Closest named color: Blue Blue (#2242C7). oklch(46.4% 0.183 263.2), rgb(29, 78, 189).
Aa
White text reads best on this color (7.29:1).
About this color
#1D4EBD is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.183 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.031 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #1D4EBD |
| RGB | rgb(29, 78, 189) |
| HSL | hsl(222, 73%, 43%) |
| OKLCH | oklch(46.4% 0.183 263.2) |
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 #1D4EBD | 7.29:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #1D4EBD | 2.87:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #1D4EBD text on white | 7.29:1 | AAA | Lc 84.7 | Fine for body text |
| #1D4EBD text on black | 2.87:1 | Fails | Lc -17.3 | 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
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A3C1FA
oklch(80.9% 0.087 263)
-
Step 400
400
#719EF8
oklch(70.6% 0.141 263.1)
-
Step 500
500
#4D83F5
oklch(63.1% 0.18 263.2)
-
Step 600
600
#3169E4
oklch(55.6% 0.196 263.1)
-
Step 700
700 (this color)
#1D4EBD
oklch(46.4% 0.183 263.2)
-
Step 800
800
#1F48A0
oklch(42.8% 0.15 262.9)
-
Step 900
900
#1E3D7F
oklch(37.7% 0.118 263)
-
Step 950
950
#12244A
oklch(26.9% 0.075 263.2)
#1D4EBD 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) | #005EC1 | 0.039 |
| Deuteranopia (no green cones) | #004FBB | 0.012 |
| Tritanopia (no blue cones) | #006A7E | 0.139 |
| Achromatopsia (no color) | #565656 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4EBD
#1D4EBD
oklch(46.4% 0.183 263.2)
- #735300
#735300
oklch(46.4% 0.095 82.7)
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 #1D4EBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.031
- Majorelle Blue #3F37C9 ΔE 0.056
- Sapphire #2138AB ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Warm Blue #4B57DB ΔE 0.073
- Cobalt #1E488F ΔE 0.075
- Blurple #5539CC ΔE 0.076
- Blueberry #464196 ΔE 0.078
Use #1D4EBD 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.