#1C5397
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.125 255.9), rgb(28, 83, 151).
Aa
White text reads best on this color (7.68:1).
About this color
#1C5397 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.125 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.018 away. White text reads best on it, at 7.68:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #1C5397 |
| RGB | rgb(28, 83, 151) |
| HSL | hsl(213, 69%, 35%) |
| OKLCH | oklch(44.5% 0.125 255.9) |
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 #1C5397 | 7.68:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #1C5397 | 2.73:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #1C5397 text on white | 7.68:1 | AAA | Lc 86.3 | Fine for body text |
| #1C5397 text on black | 2.73:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF4
oklch(88.5% 0.04 255.3)
-
Step 300
300
#A2C3F0
oklch(80.9% 0.073 256.2)
-
Step 400
400
#6EA3E8
oklch(70.7% 0.116 255.5)
-
Step 500
500
#468AE2
oklch(63.1% 0.15 255.9)
-
Step 600
600
#2572D0
oklch(55.7% 0.163 255.9)
-
Step 700
700
#175FB4
oklch(49.2% 0.151 255.9)
-
Step 800
800 (this color)
#1C5397
oklch(44.5% 0.125 255.9)
-
Step 900
900
#1A4174
oklch(37.6% 0.098 256.3)
-
Step 950
950
#102744
oklch(27.1% 0.062 255.3)
#1C5397 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) | #30599A | 0.026 |
| Deuteranopia (no green cones) | #164E96 | 0.016 |
| Tritanopia (no blue cones) | #00636D | 0.095 |
| Achromatopsia (no color) | #535353 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5397
#1C5397
oklch(44.5% 0.125 255.9)
- #714B00
#714B00
oklch(44.4% 0.093 75.6)
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 #1C5397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.018
- Cobalt #1E488F ΔE 0.032
- Light Navy #155084 ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.041
- Twilight #4E518B ΔE 0.057
- Peacock Blue #016795 ΔE 0.059
Use #1C5397 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.