#1D4EBE
Closest named color: Blue Blue (#2242C7). oklch(46.5% 0.184 263.2), rgb(29, 78, 190).
Aa
White text reads best on this color (7.27:1).
About this color
#1D4EBE is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.184 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.030 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #1D4EBE |
| RGB | rgb(29, 78, 190) |
| HSL | hsl(222, 74%, 43%) |
| OKLCH | oklch(46.5% 0.184 263.2) |
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 #1D4EBE | 7.27:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #1D4EBE | 2.88:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #1D4EBE text on white | 7.27:1 | AAA | Lc 84.6 | Fine for body text |
| #1D4EBE text on black | 2.88:1 | Fails | Lc -17.4 | 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
#A3C1FB
oklch(81% 0.089 263.3)
-
Step 400
400
#719EF9
oklch(70.7% 0.143 263.3)
-
Step 500
500
#4C83F6
oklch(63.1% 0.182 263)
-
Step 600
600
#3169E5
oklch(55.7% 0.198 263.2)
-
Step 700
700 (this color)
#1D4EBE
oklch(46.5% 0.184 263.2)
-
Step 800
800
#1F47A1
oklch(42.6% 0.153 263.3)
-
Step 900
900
#1E3D80
oklch(37.7% 0.119 263.2)
-
Step 950
950
#12244B
oklch(26.9% 0.076 263.5)
#1D4EBE 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) | #005EC2 | 0.039 |
| Deuteranopia (no green cones) | #004FBC | 0.012 |
| Tritanopia (no blue cones) | #006B7E | 0.143 |
| Achromatopsia (no color) | #575757 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4EBE
#1D4EBE
oklch(46.5% 0.184 263.2)
- #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 #1D4EBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.030
- Majorelle Blue #3F37C9 ΔE 0.055
- Sapphire #2138AB ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Warm Blue #4B57DB ΔE 0.072
- Blurple #5539CC ΔE 0.076
- Cobalt #1E488F ΔE 0.077
- Blueberry #464196 ΔE 0.079
Use #1D4EBE 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.