#12998B
Closest named color: Blue Green (#0F9B8E). oklch(61.5% 0.106 183.4), rgb(18, 153, 139).
Aa
Black text reads best on this color (5.95:1).
About this color
#12998B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.106 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.006 away. Black text reads best on it, at 5.95:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #12998B |
| RGB | rgb(18, 153, 139) |
| HSL | hsl(174, 79%, 34%) |
| OKLCH | oklch(61.5% 0.106 183.4) |
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 #12998B | 3.52:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #12998B | 5.95:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #12998B text on white | 3.52:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #12998B text on black | 5.95:1 | AA | Lc -39.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C5E0DB
oklch(88.5% 0.029 183.3)
-
Step 300
300
#9CCCC4
oklch(80.9% 0.051 183.7)
-
Step 400
400
#5FB2A6
oklch(70.8% 0.083 183.5)
-
Step 500
500 (this color)
#12998B
oklch(61.5% 0.106 183.4)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#052D29
oklch(26.9% 0.044 185.1)
#12998B 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) | #918F8B | 0.113 |
| Deuteranopia (no green cones) | #80838C | 0.107 |
| Tritanopia (no blue cones) | #009C95 | 0.015 |
| Achromatopsia (no color) | #888888 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12998B
#12998B
oklch(61.5% 0.106 183.4)
- #B9687E
#B9687E
oklch(61.5% 0.106 3.3)
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 #12998B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.006
- Persian Green #2A9D8F ΔE 0.016
- Sea #3C9992 ΔE 0.023
- Teal Green #0A9396 ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.036
- Ocean Green #3D9973 ΔE 0.037
- Dark Cyan #008B8B ΔE 0.044
- Grey Teal #5E9B8A ΔE 0.049
Use #12998B 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.