#104CBE
Closest named color: Blue Blue (#2242C7). oklch(45.8% 0.189 261.8), rgb(16, 76, 190).
Aa
White text reads best on this color (7.50:1).
About this color
#104CBE is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.189 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.026 away. White text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.79:1 |
| White text | 7.50:1 |
Values
| HEX | #104CBE |
| RGB | rgb(16, 76, 190) |
| HSL | hsl(219, 84%, 40%) |
| OKLCH | oklch(45.8% 0.189 261.8) |
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 #104CBE | 7.50:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #104CBE | 2.79:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #104CBE text on white | 7.50:1 | AAA | Lc 85.2 | Fine for body text |
| #104CBE text on black | 2.79:1 | Fails | Lc -16.8 | 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 800.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4182FF
oklch(63.1% 0.198 261.8)
-
Step 600
600
#0A62FF
oklch(55.7% 0.245 261.8)
-
Step 700
700
#0050DC
oklch(49.1% 0.223 261.8)
-
Step 800
800 (this color)
#104CBE
oklch(45.8% 0.189 261.8)
-
Step 900
900
#0E3A8E
oklch(37.7% 0.147 261.7)
-
Step 950
950
#0A2353
oklch(27% 0.093 261.7)
#104CBE 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) | #005DC2 | 0.042 |
| Deuteranopia (no green cones) | #004DBC | 0.006 |
| Tritanopia (no blue cones) | #006A7D | 0.145 |
| Achromatopsia (no color) | #555555 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104CBE
#104CBE
oklch(45.8% 0.189 261.8)
- #725100
#725100
oklch(45.8% 0.095 81.4)
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 #104CBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.026
- Sapphire #2138AB ΔE 0.055
- Majorelle Blue #3F37C9 ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Cobalt #1E488F ΔE 0.076
- Warm Blue #4B57DB ΔE 0.080
- Blurple #5539CC ΔE 0.081
- Blueberry #464196 ΔE 0.082
Use #104CBE 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.