#1D4E92
Closest named color: Cobalt (#1E488F). oklch(43% 0.124 257.6), rgb(29, 78, 146).
Aa
White text reads best on this color (8.21:1).
About this color
#1D4E92 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.124 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.017 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #1D4E92 |
| RGB | rgb(29, 78, 146) |
| HSL | hsl(215, 67%, 34%) |
| OKLCH | oklch(43% 0.124 257.6) |
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 #1D4E92 | 8.21:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #1D4E92 | 2.55:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #1D4E92 text on white | 8.21:1 | AAA | Lc 88.0 | Fine for body text |
| #1D4E92 text on black | 2.55:1 | Fails | Lc -14.2 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A4C3F0
oklch(81% 0.072 257.6)
-
Step 400
400
#72A2E8
oklch(70.7% 0.116 257.7)
-
Step 500
500
#4B89E1
oklch(63.1% 0.148 257.4)
-
Step 600
600
#2D71CF
oklch(55.6% 0.161 257.5)
-
Step 700
700
#1F5EB3
oklch(49.1% 0.149 257.4)
-
Step 800
800 (this color)
#1D4E92
oklch(43% 0.124 257.6)
-
Step 900
900
#1D4174
oklch(37.7% 0.097 257.5)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#1D4E92 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) | #2A5595 | 0.025 |
| Deuteranopia (no green cones) | #0E4A91 | 0.016 |
| Tritanopia (no blue cones) | #005E69 | 0.094 |
| Achromatopsia (no color) | #4F4F4F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4E92
#1D4E92
oklch(43% 0.124 257.6)
- #6B4800
#6B4800
oklch(43% 0.09 77)
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 #1D4E92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.017
- Dusk Blue #26538D ΔE 0.020
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.052
- Blueberry #464196 ΔE 0.055
Use #1D4E92 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.