#105E78
Closest named color: Petrol (#005F6A). oklch(45.1% 0.081 226.6), rgb(16, 94, 120).
Aa
White text reads best on this color (7.25:1).
About this color
#105E78 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.081 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.026 away. White text reads best on it, at 7.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #105E78 |
| RGB | rgb(16, 94, 120) |
| HSL | hsl(195, 76%, 27%) |
| OKLCH | oklch(45.1% 0.081 226.6) |
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 #105E78 | 7.25:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #105E78 | 2.89:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #105E78 text on white | 7.25:1 | AAA | Lc 84.8 | Fine for body text |
| #105E78 text on black | 2.89:1 | Fails | Lc -17.2 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C8D9
oklch(81% 0.048 226.3)
-
Step 400
400
#6BABC5
oklch(70.8% 0.076 225.8)
-
Step 500
500
#3D95B7
oklch(63.1% 0.097 227)
-
Step 600
600
#077FA3
oklch(55.6% 0.106 226.8)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800 (this color)
#105E78
oklch(45.1% 0.081 226.6)
-
Step 900
900
#12485B
oklch(37.6% 0.063 226.1)
-
Step 950
950
#0D2A35
oklch(26.9% 0.04 226.2)
#105E78 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) | #505C79 | 0.060 |
| Deuteranopia (no green cones) | #435378 | 0.052 |
| Tritanopia (no blue cones) | #006667 | 0.044 |
| Achromatopsia (no color) | #575757 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105E78
#105E78
oklch(45.1% 0.081 226.6)
- #7A462C
#7A462C
oklch(45% 0.081 46.5)
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 #105E78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.040
- Dark Aqua #05696B ΔE 0.047
- Peacock Blue #016795 ΔE 0.049
- Denim #3B638C ΔE 0.051
- Light Navy #155084 ΔE 0.052
Use #105E78 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.