#43978E
Closest named color: Sea (#3C9992). oklch(62.2% 0.083 185.9), rgb(67, 151, 142).
Aa
Black text reads best on this color (6.05:1).
About this color
#43978E is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.083 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.007 away. Black text reads best on it, at 6.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #43978E |
| RGB | rgb(67, 151, 142) |
| HSL | hsl(174, 39%, 43%) |
| OKLCH | oklch(62.2% 0.083 185.9) |
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 #43978E | 3.46:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #43978E | 6.05:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #43978E text on white | 3.46:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #43978E text on black | 6.05:1 | AA | Lc -39.7 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A4CAC4
oklch(81% 0.041 184.7)
-
Step 400
400
#71AEA6
oklch(70.7% 0.064 185.4)
-
Step 500
500 (this color)
#43978E
oklch(62.2% 0.083 185.9)
-
Step 600
600
#1E847B
oklch(55.6% 0.09 186)
-
Step 700
700
#0C7068
oklch(49.2% 0.083 186)
-
Step 800
800
#115B54
oklch(42.7% 0.069 185.3)
-
Step 900
900
#194B46
oklch(37.8% 0.054 186)
-
Step 950
950
#102C29
oklch(27% 0.034 186.1)
#43978E 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) | #908F8E | 0.088 |
| Deuteranopia (no green cones) | #83868F | 0.083 |
| Tritanopia (no blue cones) | #009A94 | 0.025 |
| Achromatopsia (no color) | #8A8A8A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43978E
#43978E
oklch(62.2% 0.083 185.9)
- #B2727F
#B2727F
oklch(62.3% 0.082 6.5)
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 #43978E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.007
- Dusty Teal #4C9085 ΔE 0.021
- Persian Green #2A9D8F ΔE 0.021
- Blue Green #0F9B8E ΔE 0.025
- Grey Teal #5E9B8A ΔE 0.029
- Teal Green #0A9396 ΔE 0.033
- Dull Teal #5F9E8F ΔE 0.035
- Cadet Blue #5F9EA0 ΔE 0.043
Use #43978E 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.