#12798C
Closest named color: Ocean (#017B92). oklch(53.1% 0.089 214.4), rgb(18, 121, 140).
Aa
White text reads best on this color (5.07:1).
About this color
#12798C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.089 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.010 away. White text reads best on it, at 5.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #12798C |
| RGB | rgb(18, 121, 140) |
| HSL | hsl(189, 77%, 31%) |
| OKLCH | oklch(53.1% 0.089 214.4) |
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 #12798C | 5.07:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #12798C | 4.13:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #12798C text on white | 5.07:1 | AA | Lc 74.6 | Content text, not long reading |
| #12798C text on black | 4.13:1 | AA large text | Lc -27.1 | 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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#70ABB9
oklch(70.6% 0.064 214.3)
-
Step 500
500
#4696A8
oklch(63% 0.082 214.6)
-
Step 600
600 (this color)
#12798C
oklch(53.1% 0.089 214.4)
-
Step 700
700
#0D6C7E
oklch(49% 0.083 215.1)
-
Step 800
800
#125866
oklch(42.6% 0.069 214.8)
-
Step 900
900
#194953
oklch(37.8% 0.053 213.9)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#12798C 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) | #6B758D | 0.079 |
| Deuteranopia (no green cones) | #5C6A8C | 0.071 |
| Tritanopia (no blue cones) | #00807F | 0.035 |
| Achromatopsia (no color) | #6E6E6E | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12798C
#12798C
oklch(53.1% 0.089 214.4)
- #995849
#995849
oklch(53.2% 0.09 33.9)
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 #12798C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.010
- Deep Aqua #08787F ΔE 0.021
- Sea Blue #047495 ΔE 0.024
- Bluegreen #017A79 ΔE 0.033
- Teal #008080 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.040
- Ocean Blue #03719C ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.044
Use #12798C 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.