#104C63
Closest named color: Dark Grey Blue (#29465B). oklch(39.1% 0.07 229), rgb(16, 76, 99).
Aa
White text reads best on this color (9.39:1).
About this color
#104C63 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.39:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #104C63 |
| RGB | rgb(16, 76, 99) |
| HSL | hsl(197, 72%, 23%) |
| OKLCH | oklch(39.1% 0.07 229) |
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 #104C63 | 9.39:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #104C63 | 2.23:1 | Fails | Lc 12.6 | Not readable |
| #104C63 text on white | 9.39:1 | AAA | Lc 91.4 | Preferred for body text |
| #104C63 text on black | 2.23:1 | Fails | Lc -11.0 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C6DDE9
oklch(88.4% 0.03 230.3)
-
Step 300
300
#9EC8DC
oklch(80.9% 0.053 228.6)
-
Step 400
400
#66ABCA
oklch(70.7% 0.083 228.7)
-
Step 500
500
#3295BD
oklch(63.1% 0.107 229.3)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900 (this color)
#104C63
oklch(39.1% 0.07 229)
-
Step 950
950
#0A2A38
oklch(26.9% 0.045 230.7)
#104C63 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) | #404B64 | 0.049 |
| Deuteranopia (no green cones) | #354363 | 0.042 |
| Tritanopia (no blue cones) | #005254 | 0.038 |
| Achromatopsia (no color) | #464646 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104C63
#104C63
oklch(39.1% 0.07 229)
- #633922
#633922
oklch(39.1% 0.069 48.5)
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 #104C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.031
- Deep Teal #00555A ΔE 0.037
- Dark Teal #014D4E ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.054
- Dark Blue Green #005249 ΔE 0.056
Use #104C63 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.