#1C5B96
Closest named color: Dusk Blue (#26538D). oklch(46.3% 0.115 250.7), rgb(28, 91, 150).
Aa
White text reads best on this color (7.03:1).
About this color
#1C5B96 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.115 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.025 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #1C5B96 |
| RGB | rgb(28, 91, 150) |
| HSL | hsl(209, 69%, 35%) |
| OKLCH | oklch(46.3% 0.115 250.7) |
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 #1C5B96 | 7.03:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #1C5B96 | 2.98:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #1C5B96 text on white | 7.03:1 | AAA | Lc 84.0 | Fine for body text |
| #1C5B96 text on black | 2.98:1 | Fails | Lc -18.0 | 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 700.
-
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
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A7C4E4
oklch(81% 0.055 251.1)
-
Step 400
400
#76A5D6
oklch(70.7% 0.088 250.2)
-
Step 500
500
#518DCC
oklch(63% 0.114 251.1)
-
Step 600
600
#3376B8
oklch(55.5% 0.123 250.8)
-
Step 700
700 (this color)
#1C5B96
oklch(46.3% 0.115 250.7)
-
Step 800
800
#215181
oklch(42.7% 0.095 251.1)
-
Step 900
900
#204467
oklch(37.8% 0.073 249.8)
-
Step 950
950
#14283C
oklch(27.1% 0.046 249.9)
#1C5B96 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) | #3F5F98 | 0.035 |
| Deuteranopia (no green cones) | #2C5495 | 0.021 |
| Tritanopia (no blue cones) | #006971 | 0.084 |
| Achromatopsia (no color) | #595959 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5B96
#1C5B96
oklch(46.3% 0.115 250.7)
- #7B4D00
#7B4D00
oklch(46.2% 0.1 70.5)
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 #1C5B96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.025
- Denim Blue #3B5B92 ΔE 0.027
- Peacock Blue #016795 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.040
- Light Navy #155084 ΔE 0.042
- Denim #3B638C ΔE 0.043
- Dusky Blue #475F94 ΔE 0.045
Use #1C5B96 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.