#1D547E
Closest named color: Deep Sea Blue (#015482). oklch(43.1% 0.09 245.4), rgb(29, 84, 126).
Aa
White text reads best on this color (8.01:1).
About this color
#1D547E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.090 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.014 away. White text reads best on it, at 8.01:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.62:1 |
| White text | 8.01:1 |
Values
| HEX | #1D547E |
| RGB | rgb(29, 84, 126) |
| HSL | hsl(206, 63%, 30%) |
| OKLCH | oklch(43.1% 0.09 245.4) |
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 #1D547E | 8.01:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #1D547E | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #1D547E text on white | 8.01:1 | AAA | Lc 87.5 | Fine for body text |
| #1D547E text on black | 2.62:1 | Fails | Lc -14.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E1
oklch(80.9% 0.053 244.9)
-
Step 400
400
#74A6D2
oklch(70.7% 0.084 245.9)
-
Step 500
500
#4D8FC6
oklch(63% 0.107 245.8)
-
Step 600
600
#2C79B3
oklch(55.7% 0.117 245.2)
-
Step 700
700
#1E659A
oklch(49% 0.109 245.7)
-
Step 800
800 (this color)
#1D547E
oklch(43.1% 0.09 245.4)
-
Step 900
900
#1D4564
oklch(37.7% 0.07 244.6)
-
Step 950
950
#12283B
oklch(26.9% 0.045 246.6)
#1D547E 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) | #415580 | 0.038 |
| Deuteranopia (no green cones) | #334C7D | 0.029 |
| Tritanopia (no blue cones) | #005E63 | 0.064 |
| Achromatopsia (no color) | #505050 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D547E
#1D547E
oklch(43.1% 0.09 245.4)
- #71440D
#71440D
oklch(43% 0.09 65)
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 #1D547E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.014
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.055
Use #1D547E 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.