#217878
Closest named color: Bluegreen (#017A79). oklch(52.3% 0.079 195), rgb(33, 120, 120).
Aa
White text reads best on this color (5.22:1).
About this color
#217878 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.079 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.010 away. White text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #217878 |
| RGB | rgb(33, 120, 120) |
| HSL | hsl(180, 57%, 30%) |
| OKLCH | oklch(52.3% 0.079 195) |
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 #217878 | 5.22:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #217878 | 4.02:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #217878 text on white | 5.22:1 | AA | Lc 75.6 | Fine for body text |
| #217878 text on black | 4.02:1 | AA large text | Lc -26.1 | 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 700.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A5C9C8
oklch(80.9% 0.038 194.3)
-
Step 400
400
#72ADAC
oklch(70.7% 0.061 194.5)
-
Step 500
500
#489898
oklch(63% 0.078 195.4)
-
Step 600
600
#238383
oklch(55.7% 0.085 195)
-
Step 700
700 (this color)
#217878
oklch(52.3% 0.079 195)
-
Step 800
800
#155A5A
oklch(42.7% 0.065 195)
-
Step 900
900
#1A4A4A
oklch(37.7% 0.051 195.2)
-
Step 950
950
#112B2B
oklch(26.9% 0.032 195.4)
#217878 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) | #707278 | 0.083 |
| Deuteranopia (no green cones) | #636879 | 0.078 |
| Tritanopia (no blue cones) | #007C78 | 0.015 |
| Achromatopsia (no color) | #6C6C6C | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #217878
#217878
oklch(52.3% 0.079 195)
- #92565B
#92565B
oklch(52.3% 0.08 14.8)
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 #217878, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.010
- Deep Aqua #08787F ΔE 0.013
- Deep Turquoise #017374 ΔE 0.021
- Dark Aquamarine #017371 ΔE 0.022
- Teal #008080 ΔE 0.024
- Ocean #017B92 ΔE 0.040
- Dark Aqua #05696B ΔE 0.051
- Sea Blue #047495 ΔE 0.052
Use #217878 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.