#606C99
Closest named color: Dull Blue (#49759C). oklch(54% 0.072 272.3), rgb(96, 108, 153).
Aa
White text reads best on this color (5.11:1).
About this color
#606C99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.072 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.035 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #606C99 |
| RGB | rgb(96, 108, 153) |
| HSL | hsl(227, 23%, 49%) |
| OKLCH | oklch(54% 0.072 272.3) |
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 #606C99 | 5.11:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #606C99 | 4.10:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #606C99 text on white | 5.11:1 | AA | Lc 75.3 | Fine for body text |
| #606C99 text on black | 4.10:1 | AA large text | Lc -26.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#B9C0D6
oklch(80.9% 0.032 271.6)
-
Step 400
400
#959FC2
oklch(70.7% 0.052 272.5)
-
Step 500
500
#7B87B2
oklch(63% 0.066 272.3)
-
Step 600
600 (this color)
#606C99
oklch(54% 0.072 272.3)
-
Step 700
700
#535E87
oklch(49% 0.067 272.2)
-
Step 800
800
#444D6E
oklch(42.7% 0.056 272.1)
-
Step 900
900
#394059
oklch(37.6% 0.044 272.1)
-
Step 950
950
#222634
oklch(27.1% 0.027 272.1)
#606C99 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) | #5D709B | 0.011 |
| Deuteranopia (no green cones) | #596C98 | 0.010 |
| Tritanopia (no blue cones) | #4F757C | 0.065 |
| Achromatopsia (no color) | #6E6E6E | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #606C99
#606C99
oklch(54% 0.072 272.3)
- #7D6D3B
#7D6D3B
oklch(53.8% 0.072 92.1)
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 #606C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.035
- Metallic Blue #4F738E ΔE 0.037
- Muted Blue #3B719F ΔE 0.043
- Stormy Blue #507B9C ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.045
- French Blue #436BAD ΔE 0.047
- Cerulean #457B9D ΔE 0.049
- Dusky Blue #475F94 ΔE 0.053
Use #606C99 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.