#6F99BC
Closest named color: Greyblue (#77A1B5). oklch(66.6% 0.07 244.2), rgb(111, 153, 188).
Aa
Black text reads best on this color (6.95:1).
About this color
#6F99BC is a medium-light, muted blue. In OKLCH its lightness is 67%, its chroma 0.070 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.030 away. Black text reads best on it, at 6.95:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.95:1 |
| White text | 3.01:1 |
Values
| HEX | #6F99BC |
| RGB | rgb(111, 153, 188) |
| HSL | hsl(207, 36%, 59%) |
| OKLCH | oklch(66.6% 0.07 244.2) |
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 #6F99BC | 3.01:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #6F99BC | 6.95:1 | AA | Lc 47.2 | Large or bold text, headings |
| #6F99BC text on white | 3.01:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #6F99BC text on black | 6.95:1 | AA | Lc -44.9 | 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC4D6
oklch(81% 0.034 244)
-
Step 400
400
#84A5C1
oklch(70.7% 0.055 244.3)
-
Step 500
500 (this color)
#6F99BC
oklch(66.6% 0.07 244.2)
-
Step 600
600
#4B789D
oklch(55.6% 0.076 244.6)
-
Step 700
700
#3C6586
oklch(49.1% 0.07 244.2)
-
Step 800
800
#32526D
oklch(42.6% 0.059 245.2)
-
Step 900
900
#2C4458
oklch(37.6% 0.046 244.6)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#6F99BC 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) | #8B99BE | 0.035 |
| Deuteranopia (no green cones) | #8191BB | 0.029 |
| Tritanopia (no blue cones) | #52A1A5 | 0.056 |
| Achromatopsia (no color) | #949494 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F99BC
#6F99BC
oklch(66.6% 0.07 244.2)
- #B28B67
#B28B67
oklch(66.5% 0.069 63.9)
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 #6F99BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.030
- Silver Lake Blue #778DA9 ΔE 0.037
- Faded Blue #658CBB ΔE 0.040
- Cool Gray #8D99AE ΔE 0.041
- Blue Grey #758DA3 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.045
- Bluegrey #85A3B2 ΔE 0.046
- Cadet Blue #5F9EA0 ΔE 0.053
Use #6F99BC 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.