#104197
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.15 261), rgb(16, 65, 151).
Aa
White text reads best on this color (9.43:1).
About this color
#104197 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.150 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.027 away. White text reads best on it, at 9.43:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #104197 |
| RGB | rgb(16, 65, 151) |
| HSL | hsl(218, 81%, 33%) |
| OKLCH | oklch(40.1% 0.15 261) |
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 #104197 | 9.43:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #104197 | 2.22:1 | Fails | Lc 12.8 | Not readable |
| #104197 text on white | 9.43:1 | AAA | Lc 91.2 | Preferred for body text |
| #104197 text on black | 2.22:1 | Fails | Lc -11.2 | Not readable |
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 900.
-
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
#9EC2FF
oklch(81% 0.095 260.8)
-
Step 400
400
#689FFF
oklch(70.7% 0.153 260.8)
-
Step 500
500
#3D83FF
oklch(63.2% 0.198 260.8)
-
Step 600
600
#0064FC
oklch(55.7% 0.239 260.9)
-
Step 700
700
#0053D6
oklch(49.1% 0.213 261)
-
Step 800
800
#0044B1
oklch(42.8% 0.184 260.9)
-
Step 900
900 (this color)
#104197
oklch(40.1% 0.15 261)
-
Step 950
950
#082354
oklch(27% 0.095 261.1)
#104197 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) | #004C9A | 0.029 |
| Deuteranopia (no green cones) | #004095 | 0.009 |
| Tritanopia (no blue cones) | #005765 | 0.116 |
| Achromatopsia (no color) | #464646 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104197
#104197
oklch(40.1% 0.15 261)
- #5E4200
#5E4200
oklch(40% 0.083 81.2)
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 #104197, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.027
- Sapphire #2138AB ΔE 0.040
- Twilight Blue #0A437A ΔE 0.050
- Light Navy #155084 ΔE 0.056
- Dusk Blue #26538D ΔE 0.060
- Blueberry #464196 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.066
- Deep Sea Blue #015482 ΔE 0.068
Use #104197 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.