#688FA1
Closest named color: Blue Grey (#758DA3). oklch(62.8% 0.051 228.2), rgb(104, 143, 161).
Aa
Black text reads best on this color (6.03:1).
About this color
#688FA1 is a medium-light, muted teal or cyan. In OKLCH its lightness is 63%, its chroma 0.051 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.017 away. Black text reads best on it, at 6.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.03:1 |
| White text | 3.48:1 |
Values
| HEX | #688FA1 |
| RGB | rgb(104, 143, 161) |
| HSL | hsl(199, 23%, 52%) |
| OKLCH | oklch(62.8% 0.051 228.2) |
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 #688FA1 | 3.48:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #688FA1 | 6.03:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #688FA1 text on white | 3.48:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #688FA1 text on black | 6.03:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B1C4CD
oklch(80.9% 0.024 227.8)
-
Step 400
400
#87A6B4
oklch(70.7% 0.04 227.1)
-
Step 500
500 (this color)
#688FA1
oklch(62.8% 0.051 228.2)
-
Step 600
600
#507A8D
oklch(55.6% 0.055 228.2)
-
Step 700
700
#406778
oklch(49.2% 0.052 227.5)
-
Step 800
800
#355462
oklch(42.8% 0.043 228.2)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C292F
oklch(27.2% 0.021 228.1)
#688FA1 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) | #868DA2 | 0.039 |
| Deuteranopia (no green cones) | #7D87A1 | 0.033 |
| Tritanopia (no blue cones) | #549495 | 0.035 |
| Achromatopsia (no color) | #898989 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688FA1
#688FA1
oklch(62.8% 0.051 228.2)
- #A3806E
#A3806E
oklch(62.9% 0.051 48.6)
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 #688FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.017
- Silver Lake Blue #778DA9 ΔE 0.024
- Light Slate Gray #778899 ΔE 0.025
- Steel #738595 ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.040
- Steel Grey #6F828A ΔE 0.042
- Slate Gray #708090 ΔE 0.043
- Faded Blue #658CBB ΔE 0.044
Use #688FA1 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.