#1D506F
Closest named color: Deep Sea Blue (#015482). oklch(41.2% 0.075 239.1), rgb(29, 80, 111).
Aa
White text reads best on this color (8.64:1).
About this color
#1D506F is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.075 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.032 away. White text reads best on it, at 8.64:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #1D506F |
| RGB | rgb(29, 80, 111) |
| HSL | hsl(203, 59%, 27%) |
| OKLCH | oklch(41.2% 0.075 239.1) |
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 #1D506F | 8.64:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #1D506F | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #1D506F text on white | 8.64:1 | AAA | Lc 89.4 | Fine for body text |
| #1D506F text on black | 2.42:1 | Fails | Lc -12.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#78A7C8
oklch(70.7% 0.07 239.6)
-
Step 500
500
#5391BA
oklch(63.2% 0.089 239.3)
-
Step 600
600
#347AA6
oklch(55.5% 0.098 239.6)
-
Step 700
700
#26678E
oklch(49.1% 0.09 239)
-
Step 800
800 (this color)
#1D506F
oklch(41.2% 0.075 239.1)
-
Step 900
900
#21465D
oklch(37.8% 0.058 238.2)
-
Step 950
950
#142937
oklch(27% 0.038 239.4)
#1D506F 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) | #425070 | 0.041 |
| Deuteranopia (no green cones) | #36486E | 0.033 |
| Tritanopia (no blue cones) | #00585B | 0.051 |
| Achromatopsia (no color) | #4C4C4C | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D506F
#1D506F
oklch(41.2% 0.075 239.1)
- #69401D
#69401D
oklch(41.3% 0.075 58.8)
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 #1D506F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.032
- Light Navy #155084 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.040
- Deep Teal #00555A ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
- Petrol #005F6A ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
Use #1D506F 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.