#6991AE
Closest named color: Silver Lake Blue (#778DA9). oklch(63.8% 0.062 240.4), rgb(105, 145, 174).
Aa
Black text reads best on this color (6.26:1).
About this color
#6991AE is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.062 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.019 away. Black text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.26:1 |
| White text | 3.35:1 |
Values
| HEX | #6991AE |
| RGB | rgb(105, 145, 174) |
| HSL | hsl(205, 30%, 55%) |
| OKLCH | oklch(63.8% 0.062 240.4) |
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 #6991AE | 3.35:1 | AA large text | Lc -66.4 | Content text, not long reading |
| Black text on #6991AE | 6.26:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #6991AE text on white | 3.35:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #6991AE text on black | 6.26:1 | AA | Lc -40.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B0C4D3
oklch(81% 0.03 240.3)
-
Step 400
400
#86A5BC
oklch(70.7% 0.048 240.5)
-
Step 500
500 (this color)
#6991AE
oklch(63.8% 0.062 240.4)
-
Step 600
600
#4E7997
oklch(55.7% 0.067 240)
-
Step 700
700
#3E6581
oklch(49% 0.063 241)
-
Step 800
800
#345369
oklch(42.8% 0.052 240.4)
-
Step 900
900
#2D4555
oklch(37.8% 0.04 238.4)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#6991AE 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) | #8590AF | 0.035 |
| Deuteranopia (no green cones) | #7B89AE | 0.030 |
| Tritanopia (no blue cones) | #50989A | 0.050 |
| Achromatopsia (no color) | #8C8C8C | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6991AE
#6991AE
oklch(63.8% 0.062 240.4)
- #A88365
#A88365
oklch(63.8% 0.062 60.4)
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 #6991AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.019
- Blue Grey #758DA3 ΔE 0.020
- Faded Blue #658CBB ΔE 0.028
- Light Slate Gray #778899 ΔE 0.036
- Dusty Blue #5A86AD ΔE 0.038
- Steel #738595 ΔE 0.043
- Off Blue #5684AE ΔE 0.046
- Greyblue #77A1B5 ΔE 0.049
Use #6991AE 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.