#1D549D
Closest named color: Dusk Blue (#26538D). oklch(45.2% 0.132 257), rgb(29, 84, 157).
Aa
White text reads best on this color (7.48:1).
About this color
#1D549D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.132 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.026 away. White text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #1D549D |
| RGB | rgb(29, 84, 157) |
| HSL | hsl(214, 69%, 36%) |
| OKLCH | oklch(45.2% 0.132 257) |
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 #1D549D | 7.48:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #1D549D | 2.80:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #1D549D text on white | 7.48:1 | AAA | Lc 85.6 | Fine for body text |
| #1D549D text on black | 2.80:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF6
oklch(88.6% 0.043 257.1)
-
Step 300
300
#A1C3F3
oklch(80.9% 0.078 257)
-
Step 400
400
#6DA2EC
oklch(70.6% 0.123 256.9)
-
Step 500
500
#4589E7
oklch(63.2% 0.158 257.1)
-
Step 600
600
#2370D5
oklch(55.5% 0.172 257.2)
-
Step 700
700
#155DB8
oklch(49% 0.159 257.1)
-
Step 800
800 (this color)
#1D549D
oklch(45.2% 0.132 257)
-
Step 900
900
#194177
oklch(37.8% 0.103 257)
-
Step 950
950
#102646
oklch(27% 0.066 257.9)
#1D549D 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) | #2D5BA0 | 0.026 |
| Deuteranopia (no green cones) | #0D4F9C | 0.018 |
| Tritanopia (no blue cones) | #006571 | 0.099 |
| Achromatopsia (no color) | #555555 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D549D
#1D549D
oklch(45.2% 0.132 257)
- #734D00
#734D00
oklch(45.1% 0.095 76.3)
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 #1D549D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.026
- Cobalt #1E488F ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.042
- Light Navy #155084 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.048
- Twilight #4E518B ΔE 0.059
- Peacock Blue #016795 ΔE 0.059
Use #1D549D 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.