#1C5382
Closest named color: Deep Sea Blue (#015482). oklch(43.1% 0.096 248.2), rgb(28, 83, 130).
Aa
White text reads best on this color (8.04:1).
About this color
#1C5382 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.096 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.012 away. White text reads best on it, at 8.04:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #1C5382 |
| RGB | rgb(28, 83, 130) |
| HSL | hsl(208, 65%, 31%) |
| OKLCH | oklch(43.1% 0.096 248.2) |
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 #1C5382 | 8.04:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #1C5382 | 2.60:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #1C5382 text on white | 8.04:1 | AAA | Lc 87.6 | Fine for body text |
| #1C5382 text on black | 2.60:1 | Fails | Lc -14.6 | 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
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A5C4E4
oklch(80.8% 0.056 249.4)
-
Step 400
400
#73A6D6
oklch(70.8% 0.089 247.7)
-
Step 500
500
#4B8ECC
oklch(63% 0.116 248.5)
-
Step 600
600
#2B77B9
oklch(55.5% 0.126 248.6)
-
Step 700
700
#1D649F
oklch(49.1% 0.117 248.4)
-
Step 800
800 (this color)
#1C5382
oklch(43.1% 0.096 248.2)
-
Step 900
900
#1D4467
oklch(37.6% 0.075 248.2)
-
Step 950
950
#12283D
oklch(27% 0.048 249)
#1C5382 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) | #3D5584 | 0.034 |
| Deuteranopia (no green cones) | #2E4C81 | 0.024 |
| Tritanopia (no blue cones) | #005E64 | 0.070 |
| Achromatopsia (no color) | #505050 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5382
#1C5382
oklch(43.1% 0.096 248.2)
- #714400
#714400
oklch(43% 0.094 67.9)
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 #1C5382, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.012
- Light Navy #155084 ΔE 0.012
- Dusk Blue #26538D ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.029
- Cobalt #1E488F ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.052
Use #1C5382 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.