#165DDF
Closest named color: Azul (#1D5DEC). oklch(52.1% 0.21 261.5), rgb(22, 93, 223).
Aa
White text reads best on this color (5.72:1).
About this color
#165DDF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.210 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.020 away. White text reads best on it, at 5.72:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.210) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #165DDF |
| RGB | rgb(22, 93, 223) |
| HSL | hsl(219, 82%, 48%) |
| OKLCH | oklch(52.1% 0.21 261.5) |
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 #165DDF | 5.72:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #165DDF | 3.66:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #165DDF text on white | 5.72:1 | AA | Lc 77.8 | Fine for body text |
| #165DDF text on black | 3.66:1 | AA large text | Lc -23.9 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699EFF
oklch(70.6% 0.153 261.6)
-
Step 500
500
#3F82FF
oklch(63.1% 0.198 261.5)
-
Step 600
600
#1866F4
oklch(55.7% 0.225 261.5)
-
Step 700
700 (this color)
#165DDF
oklch(52.1% 0.21 261.5)
-
Step 800
800
#0D45AC
oklch(42.7% 0.174 261.6)
-
Step 900
900
#133C88
oklch(37.8% 0.135 261.4)
-
Step 950
950
#0C244F
oklch(27% 0.085 261)
#165DDF 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) | #006FE3 | 0.044 |
| Deuteranopia (no green cones) | #005EDD | 0.007 |
| Tritanopia (no blue cones) | #007E95 | 0.159 |
| Achromatopsia (no color) | #666666 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #165DDF
#165DDF
oklch(52.1% 0.21 261.5)
- #886200
#886200
oklch(52.2% 0.108 82)
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 #165DDF, closest first.
No curated palette has a color within ΔE 0.04 of #165DDF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.020
- Warm Blue #4B57DB ΔE 0.044
- Neon Blue #4361EE ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.046
- Royal Blue #4169E1 ΔE 0.047
- Bright Blue #0165FC ΔE 0.048
- Electric Blue #0652FF ΔE 0.054
- Blue Blue #2242C7 ΔE 0.071
Use #165DDF 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.