#1185B4
Closest named color: Blue NCS (#118AB2). oklch(58.1% 0.116 233.2), rgb(17, 133, 180).
Aa
Black text reads best on this color (5.03:1).
About this color
#1185B4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.116 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.016 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #1185B4 |
| RGB | rgb(17, 133, 180) |
| HSL | hsl(197, 83%, 39%) |
| OKLCH | oklch(58.1% 0.116 233.2) |
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 #1185B4 | 4.16:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #1185B4 | 5.03:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #1185B4 text on white | 4.16:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #1185B4 text on black | 5.03:1 | AA | Lc -33.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#A0C7DD
oklch(80.9% 0.052 233)
-
Step 400
400
#69AACD
oklch(70.8% 0.084 233.2)
-
Step 500
500
#3994C0
oklch(63.2% 0.107 233.2)
-
Step 600
600 (this color)
#1185B4
oklch(58.1% 0.116 233.2)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#104761
oklch(37.6% 0.07 234.2)
-
Step 950
950
#0C2A39
oklch(27% 0.045 233.7)
#1185B4 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) | #6D84B6 | 0.073 |
| Deuteranopia (no green cones) | #5976B3 | 0.061 |
| Tritanopia (no blue cones) | #009195 | 0.069 |
| Achromatopsia (no color) | #7C7C7C | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1185B4
#1185B4
oklch(58.1% 0.116 233.2)
- #AF6531
#AF6531
oklch(58.1% 0.116 53.2)
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 #1185B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.016
- Steel Blue #4682B4 ΔE 0.030
- Nice Blue #107AB0 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.034
- Water Blue #0E87CC ΔE 0.037
- Teal Blue #01889F ΔE 0.037
- Cerulean #457B9D ΔE 0.044
- Off Blue #5684AE ΔE 0.045
Use #1185B4 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.