#1D5376
Closest named color: Deep Sea Blue (#015482). oklch(42.4% 0.081 241.1), rgb(29, 83, 118).
Aa
White text reads best on this color (8.23:1).
About this color
#1D5376 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.081 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.022 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.55:1 |
| White text | 8.23:1 |
Values
| HEX | #1D5376 |
| RGB | rgb(29, 83, 118) |
| HSL | hsl(204, 61%, 29%) |
| OKLCH | oklch(42.4% 0.081 241.1) |
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 #1D5376 | 8.23:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #1D5376 | 2.55:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #1D5376 text on white | 8.23:1 | AAA | Lc 88.2 | Fine for body text |
| #1D5376 text on black | 2.55:1 | Fails | Lc -14.0 | 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
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A6C5DD
oklch(80.9% 0.048 241.5)
-
Step 400
400
#75A7CC
oklch(70.7% 0.076 241.2)
-
Step 500
500
#4F91BE
oklch(63.2% 0.096 240.4)
-
Step 600
600
#2F7AAB
oklch(55.6% 0.106 241.2)
-
Step 700
700
#216793
oklch(49.2% 0.098 240.9)
-
Step 800
800 (this color)
#1D5376
oklch(42.4% 0.081 241.1)
-
Step 900
900
#1F4560
oklch(37.6% 0.063 242.1)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#1D5376 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) | #435378 | 0.041 |
| Deuteranopia (no green cones) | #374B75 | 0.032 |
| Tritanopia (no blue cones) | #005C5F | 0.057 |
| Achromatopsia (no color) | #4F4F4F | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5376
#1D5376
oklch(42.4% 0.081 241.1)
- #6E431A
#6E431A
oklch(42.5% 0.081 61)
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 #1D5376, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.022
- Light Navy #155084 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusk Blue #26538D ΔE 0.040
- YInMn Blue #415A77 ΔE 0.046
- Petrol #005F6A ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.053
- Deep Teal #00555A ΔE 0.054
Use #1D5376 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.