#689E99
Closest named color: Cadet Blue (#5F9EA0). oklch(66% 0.058 188.5), rgb(104, 158, 153).
Aa
Black text reads best on this color (6.93:1).
About this color
#689E99 is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.058 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.013 away. Black text reads best on it, at 6.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #689E99 |
| RGB | rgb(104, 158, 153) |
| HSL | hsl(174, 22%, 51%) |
| OKLCH | oklch(66% 0.058 188.5) |
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 #689E99 | 3.02:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #689E99 | 6.93:1 | AA | Lc 47.1 | Large or bold text, headings |
| #689E99 text on white | 3.02:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #689E99 text on black | 6.93:1 | AA | Lc -44.8 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ADC7C4
oklch(80.9% 0.028 188.2)
-
Step 400
400
#81AAA6
oklch(70.7% 0.045 188.8)
-
Step 500
500 (this color)
#689E99
oklch(66% 0.058 188.5)
-
Step 600
600
#447F7A
oklch(55.5% 0.062 188.4)
-
Step 700
700
#356B67
oklch(49% 0.058 189.1)
-
Step 800
800
#2D5854
oklch(42.8% 0.049 187.7)
-
Step 900
900
#294845
oklch(37.7% 0.037 187.9)
-
Step 950
950
#182A29
oklch(26.9% 0.024 191.4)
#689E99 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) | #989999 | 0.061 |
| Deuteranopia (no green cones) | #8E919A | 0.058 |
| Tritanopia (no blue cones) | #55A19C | 0.019 |
| Achromatopsia (no color) | #949494 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #689E99
#689E99
oklch(66% 0.058 188.5)
- #B2848B
#B2848B
oklch(66% 0.057 8.6)
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 #689E99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.013
- Dull Teal #5F9E8F ΔE 0.019
- Grey Teal #5E9B8A ΔE 0.026
- Sea #3C9992 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.046
- Greeny Grey #7EA07A ΔE 0.051
- Persian Green #2A9D8F ΔE 0.053
- Grey Green #86A17D ΔE 0.054
Use #689E99 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.