#1B85D2
Closest named color: Water Blue (#0E87CC). oklch(59.9% 0.147 246.9), rgb(27, 133, 210).
Aa
Black text reads best on this color (5.33:1).
About this color
#1B85D2 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.147 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.012 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #1B85D2 |
| RGB | rgb(27, 133, 210) |
| HSL | hsl(205, 77%, 46%) |
| OKLCH | oklch(59.9% 0.147 246.9) |
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 #1B85D2 | 3.93:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #1B85D2 | 5.33:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #1B85D2 text on white | 3.93:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #1B85D2 text on black | 5.33:1 | AA | Lc -35.4 | 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 500.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF3
oklch(88.5% 0.04 248.3)
-
Step 300
300
#9BC6ED
oklch(80.9% 0.072 246.2)
-
Step 400
400
#61A7E4
oklch(70.7% 0.114 246.6)
-
Step 500
500 (this color)
#1B85D2
oklch(59.9% 0.147 246.9)
-
Step 600
600
#0078C3
oklch(55.7% 0.146 246.8)
-
Step 700
700
#0065A5
oklch(49.2% 0.128 246.7)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#044471
oklch(37.6% 0.096 247.1)
-
Step 950
950
#082842
oklch(26.9% 0.061 247.3)
#1B85D2 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) | #6089D5 | 0.055 |
| Deuteranopia (no green cones) | #4579D1 | 0.038 |
| Tritanopia (no blue cones) | #0098A1 | 0.105 |
| Achromatopsia (no color) | #808080 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B85D2
#1B85D2
oklch(59.9% 0.147 246.9)
- #B36D00
#B36D00
oklch(59.8% 0.132 66.8)
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 #1B85D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.012
- Windows Blue #3778BF ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.045
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.049
- Blue NCS #118AB2 ΔE 0.055
- Nice Blue #107AB0 ΔE 0.058
- Off Blue #5684AE ΔE 0.065
Use #1B85D2 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.