#6D91AB
Closest named color: Silver Lake Blue (#778DA9). oklch(63.9% 0.056 240.1), rgb(109, 145, 171).
Aa
Black text reads best on this color (6.28:1).
About this color
#6D91AB is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.056 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.015 away. Black text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.28:1 |
| White text | 3.33:1 |
Values
| HEX | #6D91AB |
| RGB | rgb(109, 145, 171) |
| HSL | hsl(205, 27%, 55%) |
| OKLCH | oklch(63.9% 0.056 240.1) |
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 #6D91AB | 3.33:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #6D91AB | 6.28:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #6D91AB text on white | 3.33:1 | AA large text | Lc 60.8 | Content text, not long reading |
| #6D91AB text on black | 6.28:1 | AA | Lc -40.9 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B1C3D1
oklch(80.8% 0.028 241.2)
-
Step 400
400
#88A5BA
oklch(70.7% 0.045 239.7)
-
Step 500
500 (this color)
#6D91AB
oklch(63.9% 0.056 240.1)
-
Step 600
600
#527894
oklch(55.5% 0.061 241.1)
-
Step 700
700
#42657E
oklch(49.1% 0.057 240.5)
-
Step 800
800
#375366
oklch(42.8% 0.046 238.9)
-
Step 900
900
#304453
oklch(37.6% 0.036 241.3)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#6D91AB 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) | #8690AC | 0.032 |
| Deuteranopia (no green cones) | #7E8AAB | 0.028 |
| Tritanopia (no blue cones) | #589799 | 0.044 |
| Achromatopsia (no color) | #8D8D8D | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D91AB
#6D91AB
oklch(63.9% 0.056 240.1)
- #A6846A
#A6846A
oklch(63.9% 0.056 58.9)
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 #6D91AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.015
- Blue Grey #758DA3 ΔE 0.016
- Light Slate Gray #778899 ΔE 0.032
- Faded Blue #658CBB ΔE 0.033
- Steel #738595 ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.042
- Greyblue #77A1B5 ΔE 0.047
- Cadet Blue #5F9EA0 ΔE 0.048
Use #6D91AB 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.