#1687B1
Closest named color: Blue NCS (#118AB2). oklch(58.5% 0.112 230.2), rgb(22, 135, 177).
Aa
Black text reads best on this color (5.13:1).
About this color
#1687B1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.112 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.008 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #1687B1 |
| RGB | rgb(22, 135, 177) |
| HSL | hsl(196, 78%, 39%) |
| OKLCH | oklch(58.5% 0.112 230.2) |
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 #1687B1 | 4.08:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #1687B1 | 5.13:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #1687B1 text on white | 4.08:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #1687B1 text on black | 5.13:1 | AA | Lc -34.1 | 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
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C7DDE8
oklch(88.5% 0.028 229.2)
-
Step 300
300
#A0C7DB
oklch(80.8% 0.05 230.4)
-
Step 400
400
#6AAAC9
oklch(70.7% 0.08 230.4)
-
Step 500
500
#3A95BC
oklch(63.2% 0.103 230)
-
Step 600
600 (this color)
#1687B1
oklch(58.5% 0.112 230.2)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#10485E
oklch(37.8% 0.067 229.4)
-
Step 950
950
#0C2A37
oklch(26.9% 0.043 229.9)
#1687B1 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) | #7185B3 | 0.076 |
| Deuteranopia (no green cones) | #5E77B0 | 0.065 |
| Tritanopia (no blue cones) | #009395 | 0.065 |
| Achromatopsia (no color) | #7D7D7D | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1687B1
#1687B1
oklch(58.5% 0.112 230.2)
- #B0663A
#B0663A
oklch(58.5% 0.112 49.9)
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 #1687B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.008
- Teal Blue #01889F ΔE 0.030
- Steel Blue #4682B4 ΔE 0.031
- Cool Blue #4984B8 ΔE 0.035
- Nice Blue #107AB0 ΔE 0.039
- Water Blue #0E87CC ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Cerulean #457B9D ΔE 0.044
Use #1687B1 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.