#1D4794
Closest named color: Cobalt (#1E488F). oklch(41.5% 0.135 261.3), rgb(29, 71, 148).
Aa
White text reads best on this color (8.81:1).
About this color
#1D4794 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.135 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.009 away. White text reads best on it, at 8.81:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #1D4794 |
| RGB | rgb(29, 71, 148) |
| HSL | hsl(219, 67%, 35%) |
| OKLCH | oklch(41.5% 0.135 261.3) |
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 #1D4794 | 8.81:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #1D4794 | 2.38:1 | Fails | Lc 14.3 | Not readable |
| #1D4794 text on white | 8.81:1 | AAA | Lc 89.7 | Fine for body text |
| #1D4794 text on black | 2.38:1 | Fails | Lc -12.5 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C2F4
oklch(81% 0.078 260.5)
-
Step 400
400
#73A0EF
oklch(70.7% 0.126 261.1)
-
Step 500
500
#4F86EA
oklch(63.1% 0.162 261.3)
-
Step 600
600
#336DD8
oklch(55.6% 0.175 261.3)
-
Step 700
700
#255ABC
oklch(49% 0.165 261.3)
-
Step 800
800 (this color)
#1D4794
oklch(41.5% 0.135 261.3)
-
Step 900
900
#1F3F79
oklch(37.7% 0.106 261.2)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#1D4794 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) | #155097 | 0.024 |
| Deuteranopia (no green cones) | #004592 | 0.018 |
| Tritanopia (no blue cones) | #005A66 | 0.107 |
| Achromatopsia (no color) | #4A4A4A | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4794
#1D4794
oklch(41.5% 0.135 261.3)
- #634600
#634600
oklch(41.5% 0.086 81.5)
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 #1D4794, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.009
- Dusk Blue #26538D ΔE 0.040
- Light Navy #155084 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.047
- Blueberry #464196 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.052
- Sapphire #2138AB ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.057
Use #1D4794 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.