#00658B
Closest named color: Peacock Blue (#016795). oklch(47.7% 0.099 233.1), rgb(0, 101, 139).
Aa
White text reads best on this color (6.49:1).
About this color
#00658B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.099 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.016 away. White text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #00658B |
| RGB | rgb(0, 101, 139) |
| HSL | hsl(196, 100%, 27%) |
| OKLCH | oklch(47.7% 0.099 233.1) |
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 #00658B | 6.49:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #00658B | 3.23:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #00658B text on white | 6.49:1 | AA | Lc 81.6 | Fine for body text |
| #00658B text on black | 3.23:1 | AA large text | Lc -20.3 | 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 700.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6FA9C9
oklch(70.7% 0.076 233.5)
-
Step 500
500
#4493BB
oklch(63.1% 0.098 233.4)
-
Step 600
600
#1C7DA7
oklch(55.6% 0.106 232.9)
-
Step 700
700 (this color)
#00658B
oklch(47.7% 0.099 233.1)
-
Step 800
800
#105674
oklch(42.7% 0.081 232.7)
-
Step 900
900
#18475E
oklch(37.7% 0.064 233.4)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#00658B 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) | #52648D | 0.062 |
| Deuteranopia (no green cones) | #41598A | 0.051 |
| Tritanopia (no blue cones) | #006F72 | 0.059 |
| Achromatopsia (no color) | #5E5E5E | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00658B
#00658B
oklch(47.7% 0.099 233.1)
- #874B20
#874B20
oklch(47.7% 0.099 53.2)
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 #00658B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.016
- Denim #3B638C ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.036
- Ocean Blue #03719C ΔE 0.041
- Sea Blue #047495 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.052
Use #00658B 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.