#1BBCE4
Closest named color: Deep Sky Blue (#00BFFF). oklch(73.8% 0.131 221.1), rgb(27, 188, 228).
Aa
Black text reads best on this color (9.36:1).
About this color
#1BBCE4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.131 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.039 away. Black text reads best on it, at 9.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.36:1 |
| White text | 2.24:1 |
Values
| HEX | #1BBCE4 |
| RGB | rgb(27, 188, 228) |
| HSL | hsl(192, 79%, 50%) |
| OKLCH | oklch(73.8% 0.131 221.1) |
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 #1BBCE4 | 2.24:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #1BBCE4 | 9.36:1 | AAA | Lc 60.3 | Content text, not long reading |
| #1BBCE4 text on white | 2.24:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #1BBCE4 text on black | 9.36:1 | AAA | Lc -58.5 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DAEEF5
oklch(93.6% 0.023 220.7)
-
Step 200
200
#B9E1EF
oklch(88.6% 0.046 221.1)
-
Step 300
300
#82CDE6
oklch(80.8% 0.082 221.2)
-
Step 400
400 (this color)
#1BBCE4
oklch(73.8% 0.131 221.1)
-
Step 500
500
#0099BB
oklch(63.2% 0.116 221)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#1BBCE4 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) | #A4B7E6 | 0.107 |
| Deuteranopia (no green cones) | #8BA5E4 | 0.095 |
| Tritanopia (no blue cones) | #00C9C9 | 0.062 |
| Achromatopsia (no color) | #ADADAD | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BBCE4
#1BBCE4
oklch(73.8% 0.131 221.1)
- #EF8C67
#EF8C67
oklch(73.8% 0.131 41)
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 #1BBCE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.039
- Vivid Sky Blue #4CC9F0 ΔE 0.046
- Bright Sky Blue #02CCFE ΔE 0.051
- Turquoise Blue #06B1C4 ΔE 0.051
- Dark Turquoise #00CED1 ΔE 0.065
- Lightblue #7BC8F6 ΔE 0.076
- Aqua Blue #02D8E9 ΔE 0.077
- Topaz #13BBAF ΔE 0.079
Use #1BBCE4 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.