#1B5076
Closest named color: Deep Sea Blue (#015482). oklch(41.6% 0.084 243.8), rgb(27, 80, 118).
Aa
White text reads best on this color (8.55:1).
About this color
#1B5076 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.084 and its hue 244°. 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 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #1B5076 |
| RGB | rgb(27, 80, 118) |
| HSL | hsl(205, 63%, 28%) |
| OKLCH | oklch(41.6% 0.084 243.8) |
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 #1B5076 | 8.55:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #1B5076 | 2.45:1 | Fails | Lc 14.9 | Not readable |
| #1B5076 text on white | 8.55:1 | AAA | Lc 89.1 | Fine for body text |
| #1B5076 text on black | 2.45:1 | Fails | Lc -13.1 | 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
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A6C5DF
oklch(80.9% 0.05 243.7)
-
Step 400
400
#75A6CE
oklch(70.6% 0.079 243.8)
-
Step 500
500
#5090C2
oklch(63.2% 0.1 243.9)
-
Step 600
600
#3079AE
oklch(55.5% 0.109 243.8)
-
Step 700
700
#226696
oklch(49.2% 0.102 243.8)
-
Step 800
800 (this color)
#1B5076
oklch(41.6% 0.084 243.8)
-
Step 900
900
#1F4562
oklch(37.7% 0.066 243.9)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#1B5076 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) | #3F5178 | 0.039 |
| Deuteranopia (no green cones) | #324875 | 0.030 |
| Tritanopia (no blue cones) | #00595D | 0.059 |
| Achromatopsia (no color) | #4C4C4C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5076
#1B5076
oklch(41.6% 0.084 243.8)
- #6B4111
#6B4111
oklch(41.6% 0.084 64.5)
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 #1B5076, 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 0.024
- Dusk Blue #26538D ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.045
- Twilight Blue #0A437A ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.049
- Cobalt #1E488F ΔE 0.052
- YInMn Blue #415A77 ΔE 0.053
Use #1B5076 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.